Description: Xiphophorus Helleri, These members of the ever popular Helleri Swords display their gorgeous blue iridescent effect over a solid Dark Black body and Sword. Ours show a slight yellow tinting in all their fins making a beautiful contrast. Good sized and always active these fish will make a great accent color in your aquascape. These are strong healthy fish that would work well in a community tank. Keep them with other like sized fish that won't be overly aggressive. We have been raising these gorgeous swords for multiple generations and that sharp blue flash never fails to catch our attention!