Description: Medaka, Japanese rice fish (Oryzias latipes), are hardy colorful fish that have been kept as pets in Japan for hundreds of years. Medaka are very peaceful and are great for nano tanks, planted tanks, community aquariums, and ponds. Medaka are hardy like goldfish and are traditionally kept in small ceramic pots and patio ponds in Japan without heating or filtration. Japanese rice fish can tolerate water temperatures from 33-104 degrees Fahrenheit (1-40 Celsius) but prefer more moderate temperatures of 59-82 Fahrenheit (15-28 Celsius). Water pH and hardness are not critical and medaka can thrive in a wide range of water conditions from fresh to brackish. Medaka will eat a wide variety of food including flake, pellet, frozen, and live foods. Medaka grow to 1.5 inches and females can lay 10-20 eggs per day during the breeding season from May to August. Eggs take 7-14 days to hatch depending on temperature. Females will carry fertilized eggs on their anal fins before depositing them on plants like water hyacinth and java moss. Medaka can lay eggs on spawning mops or spawning beds made from yarn or scrubbing pads. Miyuki (幹之 or みゆき) means external light. Miyuki medaka have an iridescent line running along the top of the fish and a blue shimmer on their fins. The blue coloration is most intense when displayed on a dark background. The fish have a brilliant white sparkle when viewed from above.