These are Black Moscow Guppies that I bred in my fish room. The males are mostly black with long fins, and the females have nice black tails. From what I have seen, they seem to breed true, but no guarantees there. I keep them at 78*F and at a pH of about 7. I feed them flake food, frozen bloodworms, live baby brine shrimp, algae wafers, and blanched cucumber and zucchini. These fish have bred really easily for me, and are a great breeding project, especially if you only have one tank available. I will add a 40 hour heat pack for no extra charge. In the unlikely event of a DOA, please send me a photo of the dead fish in it's unopened bag within 6 hours of delivery and I will refund the price of the fish. Feel free to contact me with any questions.