The Light Fish Blog

In this blog, we will share information about both the saltwater and freshwater aquarium hobby. You'll find care guides, stocking recommendations, and unique articles that will expand your knowledge of fishkeeping!


German Blue Rams

10 Best Fish for a 40 Gallon Tank 

May 18th, 2024

In this post, we’ll recommend 10 of the best fish for both 40-gallon breeder and standard tanks.

Rotala Indica

10 Aquarium Plants That Grow In Sand

May 1st, 2024

In this post, we’ll discuss the fundamentals of keeping plants in a sand-based substrate, and we’ll also recommend some potential plant options.

A Nerite Snail

7 Best Algae Eating Snails

April 26th, 2024

In this post, we’ll recommend 7 of our favorite algae-eating snails.

Celestial Pearl Danios

6 Best Fish for a 5 Gallon Tank

April 17th, 2024

In this post, we’ll recommend a few freshwater fish options for a 5-gallon aquarium.

Rainbow Shiners

12 Coldwater Fish for Aquariums

March 14th, 2024

In this post, we’ll recommend some of our favorite coldwater fish for freshwater aquariums.

Emerald Cory

7 Green Fish for Freshwater Tanks

March 13th, 2024

In this post, we’ll recommend some of our favorite green colored fish for freshwater aquarium owners.

A Green Kubotai Rasbora

10 Small Colorful Fish for Freshwater Tanks

March 11th, 2024

In this post, we'll recommend 10 of our favorite small colorful fish that will brighten up the appearance of any aquarium!

An Overcrowded Aquarium

How to Remove Ammonia from a Fish Tank: 3 Options

March 6th, 2024

In this post, we'll cover how you can remove ammonia from your aquarium so that you can keep your water parameters in tip-top shape.

Man performing an aquarium water change

How to Perform an Aquarium Water Change: 5 Steps

March 5th, 2024

In this post, we’ll cover how to perform an aquarium water change for a freshwater tank, so that you can keep your aquarium inhabitants happy and healthy.

Java Moss growing on driftwood

Java Moss: Care, Planting, Types & More

March 1st, 2024

In this post, we’ll cover all there is to know about Java Moss, and we’ll dig a bit deeper into why this plant is either loved or hated by planted tank hobbyists.

A Java Fern plant

Java Fern: Care, Planting, Types & More

February 27th, 2024

In this post, we're going to cover the ins and outs of the Java Fern plant so that you can decide whether or not this plant is right for you.

Black Beard Algae Growing on Plants

Black Brush Algae: Removal, Causes & Treatment

February 23rd, 2024

In this post, we’ll go over what allows black brush algae to take over an aquarium, and we’ll provide guidelines on removal and treatment options.

A Hobbyist trimming an aquatic plant

Step-by-Step Guide to Selling Aquarium Plants for Profit

February 19th, 2024

In this post, we’ll outline the steps needed to start selling aquarium plants for profit.

Spotted Blue Eye Rainbowfish

10 Best Freshwater Fish for a 75-Gallon Aquarium

February 17th, 2024

If you’re looking for some suggestions for stocking your 75-gallon tank, we’re going to recommend 10 excellent freshwater fish.

A Goldfish Swimming

10 Most Popular Aquarium Fish

February 12th, 2024

In this post, we’re going to count down the most popular aquarium fish, and we’ll even discuss why some of these species are so popular.

Planted Aquarium

Best Aquarium Sand for Plants

February 6th, 2024

In this post, we’re going to discuss some of the misconceptions about aquarium sand, and we’ll also recommend a few plant-safe options for your next aquascape.

Hair Algae

Best Algae Control for Aquariums

February 4th, 2024

We’re going to cover some of the best methods to control algae so that it doesn’t take over your tank, and we’ll even provide some recommendations for removal.

A Sponge Filter

Best Filtration for Planted Aquariums

January 31st, 2024

In this post, we're going to recommend some of our favorite types of filtration systems for planted aquariums.

CO2 System

Best CO2 Systems for Planted Aquariums

January 26th, 2024

In this post, we're going to discuss the different types of CO2 systems you can use to make your planted aquarium flourish.

Salvinia Minima

15 Beginner-Friendly Plants for a Betta Tank

January 22nd, 2024

In this post we're going to recommend some of the best beginner-friendly aquarium plants for a betta tank.

Platinum Blue Medaka Ricefish

20 Best Fish for Planted Tanks

January 18th, 2024

If you’re looking for some guidance, we’re going to cover a bunch of different stocking options for differently-sized planted aquariums.

Eques Cory

7 Bottom Feeder Fish for Small Aquariums

January 14th, 2024

If you have a small-sized tank (less than 20 gallons), we’re going to recommend 7 different types of bottom-feeding fish that you can use in your next aquascape.

Monte Carlo

9 Best Aquarium Carpet Plants for Beginners

January 11th, 2024

For those who are looking for easy-to-carpet plants, here are 9 beginner-friendly options.

Chinese Shrubwood

8 Best Types of Aquarium Driftwood

January 5th, 2024

In this post we'll recommend 8 different types of aquarium-safe driftwood that you can use to style your tank.

An Apistogramma Cacatuoides

17 Best Fish for a 30 Gallon Aquarium

January 3rd, 2024

If you’ve allocated enough space for a 30-gallon aquarium, here are 17 of our favorite fish stocking ideas.

A Planted Aquarium

13 Best Aquarium Background Plants

December 28th, 2023

In this post, we’re going to recommend 13 aquarium background plants, for both high-tech, and low-tech aquariums.

A Red Dario Fish

20 Best Fish for a 20 Gallon Aquarium

December 22nd, 2023

If you’re deciding what to choose for your 20-gallon aquarium, we’re going to recommend 20 excellent stocking options, so that you can build out a well-rounded aquarium.

Bluefin Notho

20 Best Fish for a 10 Gallon Aquarium

December 21st, 2023

If you’re looking to stock a 10-gallon aquarium, we’re going to recommend 20 excellent freshwater fish options.

Ricefish swimming in an aquarium

10 Best Nano Fish for a Shrimp Tank

December 19th, 2023

In this post, we’ll recommend 10 nano-sized fish for your shrimp tank, so that you can build the tank of your dreams.

An Ember Tetra

Ember Tetra: Care, Size, Where to Purchase & More

November 11th, 2023

If you’re considering the Ember Tetra as your next fish, we’re going to cover everything you’ll need to know about the species, including its diet, adult size, behavior, and much more.

A Water Wisteria Plant

10 Beginner Friendly Aquarium Plants

November 9th, 2023

In this post, we'll recommend 10 beginner-friendly freshwater aquarium plants.

A Kerri Blue Emperor Tetra

10 Best Fish for a Planted Nano Tank

October 20th, 2023

If you're looking to get your creative juices flowing, you're in luck, because we're going to recommend 10 excellent stocking options for your planted nano tank.

An embed screenshot

How To Embed Video on Light Fish Listings

October 20th, 2023

This post will explain how Light Fish sellers can embed YouTube videos in their listings.

A Rotala sp Green

5 Places to Sell Aquarium Plants Online

October 12th, 2023

Whether you're an entrepreneur or a hobbyist with a bunch of aquarium plants to sell, you have options when it comes to selling aquarium plants online. In this post, we'll recommend 5 places where you can get started selling aquatic plants online.

An L333 Pleco

10 Best Places to Buy Plecos Online

October 11th, 2023

Whether you're looking for a common pleco or a specific L-class, we're going to recommend 10 places where you can buy plecos online, and we'll even recommend additional options if you can't find the specific fish you're looking for.

A Rare Guppy Strain

10 Best Places to Buy Guppies Online

October 7th, 2023

In this post, we’ll recommend 10 places where you can find guppies online so that you can build out the fish tank of your dreams.

A Giveaway Entry Button

Guide to Giveaways on Light Fish

September 18th, 2023

In this post we'll explain how Giveaways on Light Fish work.

An Angelfish

10 Best Places to Buy Angelfish Online

September 7th, 2023

If you’re looking to add some angelfish to your tank, we’re going to recommend 10 places where you can find them for sale online.

A Cherry Shrimp

Cherry Shrimp: Care, Where to Purchase & More

September 4th, 2023

In this post, we’ll cover everything needed to decide whether or not a cherry shrimp should be your next tank addition, and we’ll even recommend some highly rated vendors where you can order these fascinating shrimp online.

A Snow Onyx Clownfish

10 Best Places to Buy Clownfish Online

September 2nd, 2023

In this post, we’ll recommend 10 online vendors experienced in shipping clownfish, and we’ll even provide some additional stores at the end of the article if you’re looking for a vendor local to your area.

Bumblebee Otocinclus

Bumblebee Otocinclus: Care, Size, Where to Purchase & More

August 30th, 2023

In this post, we’ll cover all of the ins and outs of the Bumblebee Oto, so that you can decide whether or not this fascinating fish is right for you.

Peacock Cichlid

10 Best Places for Buying African Cichlids Online

August 28th, 2023

In this post, we’ll recommend 10 of the best places for buying African cichlids online.

Yellow Sakura

10 Best Freshwater Shrimp for Beginners

August 25th, 2023

In this post, we'll recommend 10 beginner-friendly freshwater aquarium shrimp, so that you can get started in caring for these wonderful invertebrates.

Blue Tuxedo Urchin

10 Best Inverts for a Reef Tank

August 24th, 2023

In this post, we’re going to recommend 10 great inverts that you can add to your reef aquarium.

Powder Blue Tangs Shoaling

5 Best Schooling Fish for a Saltwater Aquarium

August 17th, 2023

If you're interested in seeing schooling behavior in your saltwater tank, here are 5 of your best options.

An Otocinclus Fish

10 Small Algae Eaters for Freshwater Aquariums

August 16th, 2023

In this post, we'll recommend 10 of the smallest algae eaters that you can introduce into your nano aquarium.

A Ghost Shrimp

10 Best Shrimp for a Betta Tank

August 14th, 2023

In this post, we’re going to recommend 10 of the best shrimp to coexist with your betta fish.

An Electric Yellow Lab Cichlid

10 Best Cichlids for a 55 Gallon Tank

August 12th, 2023

In this post, we're going to recommend 10 of the best cichlids you can own in a 55-gallon tank.

Koi fish swimming in a pond

Koi Fish vs Goldfish: Which Is Best for a Pond?

August 11th, 2023

In this post, we’ll compare Koi and Goldfish so that you can decide which fish you like best, and which might be the better choice if you decide to add them to your backyard pond.

A Cardinal Tetra

Green Neon Tetra vs Cardinal Tetra: Species Comparison

August 10th, 2023

While there’s no doubt that both are attractive-looking fish, there are some key differences that may sway your decision on which to add to your tank.

An Apistogramma swims in a tank

African Cichlids vs South American: Which to Choose?

August 2nd, 2023

In this post, we’ll compare both African and South American cichlids, so that you can decide which fish is right for you.

An Amazon Sword Plant

Anubias vs Amazon Sword: Which Is Best?

August 1st, 2023

In this post, we’ll compare both Anubias and Amazon Swords so that you can make an informed decision when purchasing your next aquatic plant.

An aquarium with Dwarf Baby Tears

Dwarf Hairgrass vs Dwarf Baby Tears: Pros and Cons

July 30th, 2023

In this post, we’ll outline the pros and cons of owning both Dwarf Hairgrass and Dwarf Baby Tears, so that you can decide on a foreground plant that’s right for you.

An Electric Blue Boa Shrimp

7 Best Shrimp for a Planted Tank

July 28th, 2023

While there are dozens of different color morphs out there, here are 7 of our favorites freshwater shrimp to compliment your planted tank.

Rotala Hra

11 Things to Know Before Buying Aquatic Plants

June 16th, 2023

In this post, we'll outline 11 things to look out for before buying aquatic plants.

Cardinal tetras swimming in a fish tank

Best Practices for Listing on Light Fish

June 7th, 2023

In this post, we will explore best practices so that you can craft excellent listings on Light Fish.

Image of Sulawesi shrimp

6 Best Places to Sell Aquarium Shrimp Online

June 1st, 2023

In this post, we’ll recommend 6 websites that you can use to sell your aquarium shrimp online.

Image of a Zoanthid Coral

6 Best Places to Sell Coral Online

May 31st, 2023

In this post, we'll recommend 6 great options for selling corals and anemones online.

Image of Rotala Blood Red

10 Best Places to Shop for Aquarium Plants Online

May 30th, 2023

In this post, we'll recommend 10 excellent online stores where you can shop for aquarium plants.

Image showing a large zoanthid colony

10 Best Places to Buy Coral Online

May 25th, 2023

In this post, we’ll recommend 10 of our favorite online vendors so that you can feel confident purchasing the next coral for your reef tank.

Image showing different shrimp color morphs

10 Places for Buying Freshwater Aquarium Shrimp Online

May 24th, 2023

In this post, we’ll recommend 10 of our favorite online businesses that specialize in shipping aquarium shrimp, so that you can properly stock your next tank.

Freshwater fish in a breather bag

10 Best Places to Buy Freshwater Aquarium Fish Online

May 23nd, 2023

In this post, we’ll recommend 10 places where you can purchase freshwater aquarium fish online.

Pufferfish in a bag for shipment

10 Best Places to Buy Saltwater Fish Online

May 22nd, 2023

In this post, we’ll recommend 10 places where you can purchase tropical fish online.

Image of an Online Fish Store

List of 250+ Online Aquarium Stores

May 18th, 2023

A comprehensive list of online aquarium stores where you can shop for aquarium fish, invertebrates, coral, aquatic plants, and more.

Image of an Adult Orange Shoulder Tang

Orange Shoulder Tang: Care, Appearance, Temperament & More

May 11th, 2023

In this guide, we’ll cover everything you'll need to know before deciding on an Orange Shoulder Tang.

Image of a Green Spotted Puffer

Green Spotted Puffer: Care, Size, Tank Mates & More

May 10th, 2023

In this care guide, we'll provide all the essentials you'll need to determine whether or not the Green Spotted Puffer is the right choice for your aquarium. We'll discuss the fish's unique characteristics, dietary requirements, tank size, and much more.

Image of a Tomini Tang

Tomini Tang: Care, Size, Where to Purchase & More

May 9th, 2023

In this post, we’ll cover the ins and outs of the Tomini tang, and we’ll also recommend best practices when it comes to feeding, tank setup, and more.

Image of a Lawnmower Blenny

Lawnmower Blenny: Diet, Reef Compatibility, Tank Size & More

May 6th, 2023

In this guide, we'll discuss how to care for the Lawnmower Blenny, and provide guidance for hobbyists considering the species as their potential next fish. 

Image of an Albino Axolotl

Axolotl vs Mudpuppy: What’s the Difference?

April 27th, 2023

In this post, we’ll summarize the two species, and we’ll also outline some of the key similarities and differences hobbyists should be aware of before deciding whether or not one of these amphibians is the right choice for you.

Image of Chaetomorpha algae

Top 5 Refugium Lights for Growing Chaetomorpha

April 17th, 2023

In this post, we’ll discuss 5 potential refugium lights for growing chaetomorpha, and we’ll also discuss some of the things you should consider before choosing a reliable light.

Image of the Eheim 2217 and 2215 canister filter

Eheim 2215 vs 2217: Which Canister Filter Is Better for You?

April 14th, 2023

In this post, we’ll compare these two canister filters, and provide recommendations for hobbyists and planted tank aquascapers.

Image of a Purple Niger Triggerfish

Niger Triggerfish: Care, Tank Mates, Tank Size & More

April 13th, 2023

In this post, we’ll cover everything a hobbyist will need to know to decide whether or not a Niger Triggerfish should be your next tank addition.

Image of Eco-Complete

Eco-Complete vs Flourite: Which Is Better?

April 11th, 2023

In this post, we’ll compare the two substrates, and we’ll recommend different types of hardscape and plant options so that you can build the perfect planted tank.

Image of Seachem Purigen and MatrixCarbon

Seachem’s Purigen vs MatrixCarbon: Which Is Better?

April 10th, 2023

In this post, we’ll provide some background on the Seachem company, compare the two products, and we'll give recommendations on which product is best for a few different scenarios.

Image of a Catalina Goby

Catalina Goby: Care, Diet, Tank Mate Compatibility & More

April 7th, 2023

In this post, we'll discuss how to care for the species, diet recommendations, tank mate options, and much more.

Image of a Desjardini Tang

Desjardini Tang: Care, Appearance, Tank Size & More

April 5th, 2023

In this post, we’ll cover everything you’ll need to know about the Desjardini tang. We’ll compare its appearance with the similar Sailfin tang, recommend tank sizes, and much more.

Image of a Koran Angelfish

Koran Angelfish: Care, Reef Compatibility, Tank Size & More

April 4th, 2023

In this post, we'll cover all there is to know about the Koran Angelfish so that you can decide whether or not the species is for you.

Image of a Pygmy Angelfish

Pygmy (Cherub) Angelfish: Care, Diet, Tank Mates & More

April 1st, 2023

In this post, we’ll cover everything you’ll need to know before choosing a Pygmy Angelfish as the next addition to your saltwater aquarium.

Image of a Powder Blue Tang

Powder Blue Tang: Care, Acclimation, Reef Compatibility & More

March 30th, 2023

In this care guide, we’re going to outline everything you’ll need to decide whether or not the Powder Blue Tang is the right fish for you.

Image of Rotala Hra

Rotala H'ra: Care, Lighting Requirements, Appearance & More

March 28th, 2023

In this post, we'll discuss the appearance of the plant, growth rates, and lighting requirements. We'll also provide recommendations on placement and fertilization.

Image of a bag of Sakrete Play Sand

Best Aquarium-Safe Play Sand

March 27th, 2023

In this post, we'll discuss the pros and cons to aquarium play sand, and we'll also recommend a few aquarium-safe sand options for your freshwater aquarium.

Image of a school of Blue Emperor Tetras

Top 10 Centerpiece Fish for a 10-Gallon Tank

March 26th, 2023

In this post, we’ll recommend 10 of our favorite centerpiece fish for a 10-gallon freshwater aquarium.

Image of a Gem Tang

Gem Tang: Pricing, Care, Reef Compatibility & More

March 24th, 2023

In this post, we'll cover a lot of information about gem tangs. We'll discuss the appearance of some new related hybrids, we'll give an overview of why they are so expensive, and we'll also provide recommendations on their care requirements.

Image of Seachem Root Tabs

API Root Tabs vs Seachem Root Tabs: Which is Best?

March 22nd, 2023

In this post, we’ll compare the root tabs from these popular businesses, and we’ll even provide some alternative fertilization methods for hobbyists looking to build out a beautiful planted aquarium.

Image of a Gold Balloon Ram

Balloon Rams: Care, Appearance & Types, Behavior & More

March 20th, 2023

In this post, we're going to discuss the three most commonly found balloon rams seen in the aquarium hobby. We'll discuss their overall care, lifespan, and much more so that you can decide where you stand on these controversial fish.

Image of a Bumblebee Platy

Bumblebee Platy: Care, Size, Appearance & More

March 18th, 2023

In this post, we’ll cover everything there is to know about the Bumblebee Platy. We’ll review their size, lifespan, appearance, and diseases that they may be exposed to. We’ll even discuss breeding this unique-looking fish in captivity.

Image of Lysmata Wurdemanni

Camel Shrimp vs Peppermint Shrimp: Species Comparison

March 16th, 2023

In this post, we’ll compare these two popular shrimp species, and we’ll summarize some of their similarities and differences so that you can decide whether or not one of these shrimp might be right for you.

Image of Stomatella auricula shells

Stomatella Snails: Benefits, Removal, Where to Purchase & More

March 15th, 2023

In this post, we'll briefly discuss the Stomatella genus, and we'll review some of the advantages and disadvantages of keeping these tiny saltwater snails. 

Image of Canister Filter Aquarium Diagram

Sump vs Canister Filter: Which Is Better?

March 14th, 2023

In this post, we'll discuss the differences between sumps and canister filters, and we'll recommend which filtration method is suitable for both saltwater and freshwater aquarium hobbyists.

Image of Refugium Diagram

Algae Scrubber vs Refugium: Which Is Best?

March 13th, 2023

In this post, we'll summarize the key differences between these aquarium appliances, and we'll also provide recommendations on which option might be best for different types of hobbyists.

Image of multiple Clownfish

Clownfish Salinity: Recommended Ranges, How To Raise and Lower

March 11th, 2023

In this post, we'll recommend the correct salinity levels for clownfish, and we'll also explain how to raise and lower your salinity.

Image of a Pineapple Sponge

Pineapple Sponges: Benefits vs Removal in a Reef Tank

March 10th, 2023

In this post, we'll summarize the benefits of keeping and removing pineapple sponges, and we'll also discuss appropriate methods for their removal.

Image of a Pygmy Sunfish

Pygmy Sunfish: Care, Appearance & Types, Diet & More

March 9th, 2023

In this post, we will cover the unique characteristics, diet, and general care recommendations for Pygmy Sunfish, which are a group of lesser-known freshwater nano fish consisting of seven species.

Image of a Terrarium Rack Rack

Best Aquarium Racks for Breeders and Hobbyists

March 4th, 2023

If you're interested in an aquarium rack, you'll want something capable of withstanding a large amount of weight. In this post, we'll recommend ten options to build the ultimate fish room.

Image of a fish suffering from Ich

Epistylis vs Ich: Transmission, Similarities, Differences, and Treatment

March 2nd, 2023

In this post, we’ll discuss the transmission, similarities, differences, and treatments for these two freshwater diseases.

Image of a Vermetid Snail

How To Get Rid Of Vermetid Snails

March 1st, 2023

Once introduced into an aquarium, vermetid snails can multiply quickly, and their removal can be incredibly difficult. In this post, we’ll provide some background on these pests, and recommend options for their removal.

Image of a cherry shrimp grazing on substrate

Best Substrate for Cherry Shrimp

February 27th, 2023

In this post, we’re going to recommend some of the best substrates for cherry shrimp owners, and we’ll also recommend different substrates that are suitable for different tank builds.

Image of a Guppy Fish

Guppy pH Levels: Recommended Ranges, How to Raise, Lower & More

February 26th, 2023

In this post, we’ll discuss the recommended pH ranges for guppies, how to raise & lower them, and provide recommendations on testing kits you can use to dial in your pH levels.

Image of a dutch style aquascape

55 Gallon Aquascape Ideas

February 25th, 2023

In this post, we recommend five aquascape designs that can be recreated or used as inspiration for your 55-gallon tank.

Image of a Green Phantom Pleco

Green Phantom Pleco: Care, Size, Appearance & More

February 23rd, 2023

The Green Phantom Pleco is an excellent choice for hobbyists new to pleco keeping. In this post, we’re going to cover everything there is to know about the species. We’ll discuss water parameters, lifespan, diet, and more.

Image of a Christmas Wrasse

Christmas Wrasse: Care, Size, Appearance & More

February 19th, 2023

If you’re considering a Christmas Wrasse as your next fish, it's your responsibility to be well-versed in its care. In this post, we’ll discuss everything you’ll need to know before adding a Christmas Wrasse to your display tank.

Image of a Cuban Cichlid

Cuban Cichlid: Care, Size, Appearance, Tank Mates & More

February 17th, 2023

Large, powerful, and aggressive, the Cuban Cichlid is a territorial fish that only the experienced aquarist should consider. In this post, we’ll cover everything related to their overall care, diet, breeding, and much more.

Image of a CO2 Reactor

CO2 Reactor vs Diffuser: Which Is Better?

February 14th, 2023

In this post, we're going to cover the pros and cons of these diffusion methods, and we'll give you all of the information needed to decide which tool for CO2 diffusion is best for you.

Image of a Yellow Watchman Goby

Yellow Watchman Goby: Care, Size, Diet, Breeding & More

February 13th, 2023

If you’re considering a Yellow Watchman as your next fish, you’ll want to be well-versed in its care. In this post, we’ll discuss everything there is to know about the species, we’ll get into their diet, the intricacies of breeding, and much more.

Image of a Blue Spotted Puffer

Blue Spotted Puffer: Care, Acclimation, Appearance & More

February 11th, 2023

Known for its brightly-colored blue dots and ability to fill itself up like a balloon, the Blue Spotted Puffer is a fish that has a lot to offer. In this post, we'll discuss best practices when it comes to their care and we’ll also give recommendations on tank setup, tank mates, and much more.

Image of a Yellow Coris Wrasse

Yellow Coris Wrasse: Care, Appearance, Reef Compatibility & More

February 8th, 2023

The Yellow Coris Wrasse is known for its brightly colored body and is an excellent choice for hobbyists of any skill level. In this post, we'll cover everything you'll need to decide whether or not this fish is right for you.

Image of a Peacock Mantis Shrimp

Mantis Shrimp vs. Pistol Shrimp: Which Is Best?

February 7th, 2023

If you’re looking to add a unique species to your saltwater aquarium, both Mantis Shrimp and Pistol Shrimp have a lot to offer. In this post, we’re going to give you everything you’ll need to help decide which species is best for you.

Image of a Candy Cane Coral

Candy Cane Coral: Care, Appearance & Types, Placement & More

February 6th, 2023

In this post, we’re going to discuss best practices for Candy Cane Coral care, the different color morphs that are often traded in the hobby, and much more.

Image of shipping packages

How To Sell Live Fish Online Using Light Fish

February 3rd, 2023

While there are a few different places to sell live fish online, we make it easy here on Light Fish, and the following steps should help get you started.

Image of a fish affected by Marine Velvet Disease

Marine Velvet vs Ich: Similarities, Differences, Causes & Treatment

February 2nd, 2023

In this post, we'll discuss the similarities and differences between these diseases, and provide guidance on treatment and prevention.

Image of a Black Widow Anemone

Black Widow Anemone: Appearance, Care, Pricing & More

January 31st, 2023

In this post, we’re going to cover everything you’ll need to know if you plan on adding one of these invertebrates to your reef tank.

Image of Blastomussa Wellsi

Blastomussa Coral: Care, Appearance & Types, Fragging & More

January 29th, 2023

In this post, we’ll cover everything related to Blastos. We’re going to discuss pricing, placement, and fragging. We’ll even comment on some of our favorite types of Blastomussa corals.

Image of a Java Moss

Flame Moss vs Java Moss: Similarities, Differences & Design Ideas

January 25th, 2023

In this post, we’ll compare the differences between these two mosses, and we’ll showcase some interesting aquascape designs using these plants.

Image of a Green Dragon Bristlenose Pleco

Green Dragon Bristlenose Pleco: Care, Size, Lifespan & More

January 24th, 2023

In this post, we’re going to cover care, lifespan, breeding, and everything else you'll want to know about this uncommon pleco.

Image of a CO2 tank

CO2 In An Aquarium: How Much Is Too Much?

January 22nd, 2023

Too much CO2 in an aquarium can be lethal to tank inhabitants, so it’s important to know when you’re injecting too much, and what to do to remedy the situation.

Image of Guppy Grass

Guppy Grass vs Hornwort: Which Is Best?

January 20th, 2023

In this article, we will compare these two plants and provide recommendations for their use in different scenarios.

Image of a Yellow Leather Fiji Coral

Leather Coral 101: Care, Appearance & Types, Placement & More

January 19th, 2023

This post provides guidance for maintaining leather corals and examines some of the most commonly found varieties in the reef keeping hobby.

Image of a Cichlid with Java Fern in the background

Cichlid Tank Ideas: Hardscape Options, Plants & More

January 16th, 2023

In this post, we’re going to discuss tank ideas for African Cichlids, Dwarf Cichlids, and New World Cichlids

Image of a Java Fern plant

How to Fix Melting in Java Fern Plants

January 12th, 2023

In this post, we’ll recommend causes, solutions, and what to do when your Java Fern plant experiences melting.

Image of a bag of Instant Ocean

Instant Ocean Sea Salt vs Reef Crystals: Similarities & Differences

January 11th, 2023

In this post, we’ll compare the similarities and differences between these two products and provide guidance on which option is best for reef tanks, newly established aquariums, and more.

Image of a Miami Hurricane Chalice Coral

Chalice Coral: Care, Appearance & Types, Growth Rate & More

January 10th, 2023

In this blog post, we’re going to give you all the knowledge you need to decide whether or not a chalice coral is right for you.

Image of an RO/DI unit

6 Places That Sell RO/DI Water

January 7th, 2023

In this post, we’ll recommend 6 places that sell RO/DI water, and we’ll briefly discuss the pros and cons of making RO/DI water at home.

Image of a Red Fire Shrimp

Fire Shrimp vs Cleaner Shrimp: Which Is Best?

January 6th, 2023

In this post, we’ll discuss the similarities and differences between these shrimp, and we’ll reveal why they’re both commonly referred to as cleaner shrimp.

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Blonde Naso Tang: Care, Acclimation, Where To Purchase & More

January 5th, 2023

Sought after for their appearance, we will cover all the essential aspects of caring for a Blonde Naso Tang in this blog post.

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Inline CO2 Diffusers: Our Top 5, Cleaning, Positioning & More

December 29th, 2022

In this post, we'll share some of our top picks for inline CO2 diffusers and provide tips on how to properly install and maintain them.

Image of a reef tank

Reef Tank Magnesium Levels: How to Raise, Lower & More

December 23rd, 2022

In this post, we’ll be discussing some of the best ways to test magnesium levels, how to raise and lower them, and provide guidance on recommended ranges.

Image of a brain coral

Brain Coral 101: Care, Types and Appearance, Fragging & More

December 21st, 2022

In this guide, we’re going to cover everything there is to know about brain corals. We’ll discuss the appearance of some of the most popular types, best practices with feeding, care, and much more.

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Torch Coral 101: Care, Appearance and Types, Feeding & More

December 16th, 2022

In this guide, we’re going to cover everything you’ll need to know when it comes to torch corals. We'll recommend best practices when it comes to feeding, fragging, lighting, and more.

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CO2 Drop Checkers: How To Use, Position, Read & More

December 14th, 2022

In this post, we’re going to cover everything related to CO2 drop checkers, we’ll discuss how they work, where to place them, and much more.

Image of recently split corals

Anemone Splitting: Causes, Signs & Post-Split Care

December 12th, 2022

In this post, we’re going to discuss why an anemone splits, what are some of the early signs of anemone splitting, how long the splitting process takes, and much more.

Image of Corals Being Sold

How to Ship Coral Frags: A Step-by-Step Guide

December 11th, 2022

Whether you’re shipping to a friend or a customer it's important that you understand the correct way to package and ship coral. In this post, we're going to provide a step by step guide on shipping coral frags.

Image of a Pink Acan Coral

Micromussa vs Acans: What’s The Difference?

December 10th, 2022

There’s a lot of confusion in the reefing community about Acan corals. In this post, we’re going to clear up some of that confusion so that you can determine the similarities and differences between these two coral genera.

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Dwarf Hairgrass vs Mini Dwarf Hairgrass: Similarities and Differences

December 8th, 2022

In this post, we’re going to cover the similarities and differences between Dwarf Hairgrass and Mini Dwarf Hairgrass.

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How to Ship Aquarium Plants in 5 Easy Steps

December 8th, 2022

In this post, we’re going to explain how you can ship aquatic plants in just 5 simple steps.

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6 Best Places to Sell Aquarium Fish Online

December 7th, 2022

In this post, we’re going to suggest 6 websites where you can sell your aquarium fish online.

Image of a damaged Coral

Reef Tank Phosphate Levels: How To Raise, Lower & More

December 6th, 2022

In this post, we’re going to discuss Phosphate, one of the most important chemical compounds to monitor in a reef aquarium.

Image of a Frag Rack

10 Frag Racks That Look Great In Any Tank

December 4th, 2022

In this post, we’re going to discuss the benefits of owning a frag rack, and we’re even going to recommend 10 different frag rack options for your reef tank.

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Orange Spotted Goby: Care, Tank Mates, Diet & More

December 2nd, 2022

If you're interested in adding the Orange Spotted Goby as your next fish, this post will cover everything there is to know about this unique species

Image of Dwarf Hairgrass with CO2

Growing Dwarf Hairgrass Without CO2: Is It Possible?

November 30th, 2022

If you’re considering adding this plant to your aquarium, you may be wondering if you need to supplement CO2 to grow this plant. In this post, we’re going to discuss whether this is possible, and the effect that CO2 has on this wonderful plant.

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Blue Dream vs Blue Velvet Shrimp: Similarities and Differences

November 29th, 2022

In this post, we’ll cover the similarities and differences of two of the most popular blue-colored shrimp in the freshwater aquarium hobby.

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Blue Emperor Tetra: Size, Tank Mates, Temperament & More

November 29th, 2022

In this care guide, we'll cover all of the topics you'll want to know about before owning a Blue Emperor Tetra.

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Which is Better: Fluval Stratum vs Bio Stratum

November 27th, 2022

In this post, we'll discuss the similarities and differences between Fluval Stratum and Fluval Bio-stratum. We'll also recommend the best option for differently-sized aquariums.

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5 Ideas for Your Seiryu Stone Aquascape

November 22nd, 2022

In this post, we'll discuss five ways to create unique hardscape designs using seiryu stones.

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The Top 5 Smallest Protein Skimmers

November 22nd, 2022

In this post we'll review our top 5 smallest protein skimmers from established brands such as Fluval and Hydor

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Maroon Clownfish: Care, Diet, Tank Size & More

November 21st, 2022

This guide will prepare you for Maroon Clownfish care. After reading, you'll have more than enough information to determine whether or not this fish should be the next addition to your saltwater aquarium.

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Snow White Cichlid: Appearance, Care, Lifespan, Breeding & More

November 15th, 2022

These uncommon cichlids have entirely white bodies with striking red eyes. In this post, we’ll discuss their overall care, lifespan, and appearance. We’ll even discuss best practices for breeding this fish in captivity!

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Cryptocoryne Spiralis: Care, Planting, Propagating & More

November 11th, 2022

Whether you’re new to aquatic plant keeping, or a seasoned aquascaper, we guarantee you’ll love all this plant has to offer. In this post, we're going to review everything you'll need to know if you're considering adding this plant to your aquarium.

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Tessalata Eel: Care, Tank Size, Diet & More

November 9th, 2022

In this guide, we’re going to cover a wide range of topics about the Tessalata Eel. We’ll discuss the appropriate tank size, diet, feeding, lifespan, and diseases.

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Queen Arabesque Pleco: The Complete Care Guide

November 3rd, 2022

If you’re deciding whether or not a queen arabesque pleco could be the right fish for you, you’re in luck, because we’re going to cover all of the topics about this amazing species.

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Red Dragon Flowerhorn Cichlid: Care, Lifespan, Breeding & More

November 1st, 2022

We’re going to cover everything you’ll need to decide whether or not a Red Dragon Flowerhorn is the fish for you. We’ll discuss the history behind the species, its lifespan, diet, and general care requirements.

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Anubias Frazeri: Care, Planting, Maintenance & More

October 30th, 2022

We’ll go over how to propagate, recommend lighting levels, tank size, and discuss all of the care requirements for Anubias Frazeri.

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Black Mystery Snail: Size, Lifespan, Breeding, FAQs & More

October 26th, 2022

In this guide, we’re going to cover black mystery snails, we'll go over diet, water parameters, tank mates, and even answer some frequently asked questions!

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Platinum Parrot Fish Care Guide: Size, Diet, Lifespan, Breeding & More

October 24th, 2022

If you’re interested in owning one of these fish, we’re going to discuss everything you’ll need to know about the species. We’ll review diet, tank size, lifespan, what to include in their tank, and even discuss breeding!

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Blue Diamond Discus Care: Diet, Lifespan, Diseases, Breeding & More

October 18th, 2022

In this care guide, we’ll go over all there is to know about caring for this species. We’ll discuss some of the most common diseases, appearance, diet, and even breeding.

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Hygrophila Salicifolia: Care, Trimming, Planting & More

October 16th, 2022

In this guide, we’ll go over all of the information needed to take care of this magnificent plant. We’ll discuss planting, propagation, trimming, growth rate, and overall care!

Image of a Taiwan Lily

Nymphoides Hydrophylla Plant Care: Everything You Need To Know

October 14th, 2022

In this guide, we’ll teach you all there is about caring for Nymphoides Hydrophylla plants and go over some of the benefits that this wonderful plant brings to the hobby.

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Can a Filter Be Too Big For a Fish Tank?

October 3rd, 2022

In this post, we’ll go over all of the important decisions you need to make when selecting an appropriate filter, and we'll provide answers to some frequently asked questions, including: can a filter be too big for a fish tank?

Image of a Purple Moscow Guppy Fish

Purple Moscow Guppy Care: Tank Mates, Breeding, Disease & Lifespan

September 30th, 2022

In this guide, you’ll learn all there is to know about caring for Purple Moscow Guppies. We’ll discuss diet, common diseases, tank mates, lifespan, and even breeding.

Image of an Electric Blue Jack Dempsey Fish

Electric Blue Jack Dempsey: Care, Diet, Size, and More

September 30th, 2022

After reading this guide, you’ll have all of the information needed to decide whether or not this unique fish should be the next addition to your freshwater aquarium.

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20 Best Saltwater Fish For Nano Reef Tanks

September 22nd, 2022

In this post, we’ll recommend 20 of our favorite stocking options for your nano reef tank!

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Divided Betta Fish Tanks: Everything You Need To Know

September 26th, 2022

In this post, we'll briefly discuss some basic betta fish care requirements and go over a popular aquarium setup, the divided betta fish tank.

Image of an Orange Spotted Goby

Orange Spot Goby vs Diamond Goby: Similarities and Differences

September 20th, 2022

We’ll discuss some of the similarities and differences between two of our favorites gobies, the orange spotted goby and the diamond goby.

Image of a Kole Yellow Eye Tang

Kole Yellow Eye Tang: Care, Growth Rate, Diet & More

September 20th, 2022

In this post, we’ll discuss care, diet, and even breeding to ensure that you have all of the knowledge needed to care for a Kole Yellow Eye Tang.

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Algae Growing On Plants: What It Means and How to Fix It

September 14th, 2022

In this post, we’ll discuss the common culprits for algae blooms, how to prevent them, and what to do if algae has already taken hold.

Image of a Galaxy Koi Betta

Galaxy Koi Betta: Care, Tank Setup, Breeding & More

September 5th, 2022

From solid colors to striped patterns, Betta fish have been bred to produce some of the most unique color combinations available in the freshwater aquarium hobby. In this post, we'll discuss caring for a unique color variant, the Galaxy Koi.

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Snowflake Clownfish 101: Care, Lifespan, Breeding, Size & More

September 1st, 2022

Snowflake Clownfish are a unique saltwater species that can make a great addition to a saltwater aquarium. In this post, we'll cover all there is to know about this interesting species.

Image of a Monster Clown Loach

Monster Clown Loach: Full Care Guide

September 1st, 2022

Clown Loaches that are purchased and are 1-2 inches in size can grow into a loach that stretches 12 inches in length, earning the Monster designation. Seeing one of these large Clown Loaches in person is truly a sight to see! In this post, we'll discuss their care requirements, diet, and even breeding!

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Pink-Streaked Wrasse Care: Diet, Breeding, Lifespan & More

August 30th, 2022

Wrasse fish, some of the most brightly colored fish in the ocean, are unsurprisingly some of the most sought-after species in the aquarium hobby. In this post, we'll discuss the care for one of our favorites, the Pink-Streaked Wrasse.

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Best Saltwater Fish for a 55 Gallon Tank

August 29th, 2022

Many aquarists consider a 55 gallon tank to be one of the best size options available for a fish tank. In this blog post, we'll go over some of the best fish for a saltwater aquarium this size.

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Saddleback Clownfish Care Guide: Tank Mates, Lifespan, Size & More

August 28th, 2022

Impressive in appearance, the Saddleback Clownfish can be a showstopper in any reef aquarium. In this post, we’ll discuss everything you need to know about keeping this species in your home aquarium!

Image of a Koi Angelfish

Koi Angelfish - Species Spotlight

August 23rd, 2022

Koi Angelfish is an Angelfish that gets its name from its stark resemblance in pattern and color with Koi.

Image of a Japanese Pistol Shrimp

Japanese Pistol Shrimp - Answers To Frequently Asked Questions

August 22nd, 2022

Originating from Sri Lanka, Japanese Pistol Shrimp make an interesting addition to a saltwater aquarium or reef tank.

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The African Cichlid - Everything You Need to Know

April 27th, 2022

The African Cichlid is without a doubt one of the most unique freshwater fish available. In this blog post, we’ll discuss what type of fish is considered an African Cichlid, the history of the fish, and the appropriate care.

Image of a lightbulb

Do Fish Need Light?

April 23rd, 2022

The natural lighting cycle for most fish is 10-12 hours. In the aquarium hobby, owners often run high-powered fixtures for 6-8 hour photoperiods. But what effect does this have on livestock?

Image of a orange pumpkin shrimp

Orange Pumpkin Shrimp: Care, Breeding, Tank Mates & More

February 20th, 2022

Orange Pumpkin Shrimp are an excellent choice for a freshwater shrimp tank. These hardy shrimp will add a pop of color to any freshwater aquarium.

Image of a pink skunk anenomefish

Pink Skunk Clownfish 101: Care, Lifespan, Breeding & More

February 1st, 2022

Pink Skunk Anemonefish, also known as the Pink Skunk Clownfish, is an Anemonefish native to northern Australia. Given the right conditions, these fish can be an excellent addition to the home reef tank.

Image of a candy crush mushroom coral

Candy Crush Mushroom Coral

January 29th, 2022

Mushroom Corals, a great beginner coral for reef tanks, are found throughout the world's oceans and can grow from about 1 inch to 1 foot in diameter. One of our favorites, the Candy Crush Mushroom Coral, is known for its bright orange coloration and blue streaks.

Image of discus fish

Best Substrate for Discus

January 26th, 2022

Discus fish are hands down some of the most beautiful freshwater fish available. If you're planning on adding these fish to your aquarium, choosing the correct substrate is an important step towards success with this species.

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Can You Sell Fish on Facebook?

January 23rd, 2022

Facebook has long been home to aquarium communities and trade groups. In 2017 a new policy made a drastic change to the content being shared in these communities.

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15 Easy to Grow Red Aquarium Plants

January 22nd, 2022

Red plants make a great addition to any freshwater aquarium. In this article, we'll recommend five beginner friendly red plants.

Picture of American Money

10 Best Nano Schooling Fish

January 14th, 2022

Nano tanks are great for their portability and small size, but a small aquarium limits your stocking choices. In this post, we'll discuss our 10 best nano schooling fish.

Picture of American Money

How to Get Paid as a Seller on Light Fish

January 13th, 2022

Have a listing that just sold on Light Fish? Learn how to get paid after your listing has sold.

Black beard algae

Freshwater Aquarium Algae Guide

January 12th, 2022

Combating algae can be one of the most challenging aspects of freshwater tanks. Read our algae guide to learn the best approach to dealing with some of the most common types of freshwater algae.

Cherry shrimp

How to Ship Freshwater Shrimp in 9 Steps

January 2nd, 2022

If you're new to selling aquarium shrimp, shipping freshwater shrimp may seem like a daunting task. Follow our how to guide to ensure your shrimp are being transferred safely and securely.