The Glass bloodfin species likes every kind of food. Live, frozen, dried. We feed them flakes, which they like to eat from the surface together with Black skirt tetras. They look like little piranas. But don´t think I don´t feed them often, I am feeding them two times a day, so they aren´t hungry. When we started with bloodfins, they did not take their food from the surface and they only ate food from the water. We give them granulated food and frozen food too. Bloodworms are guaranteed success.This tetra prefers breeding in the morning hours, when the aquarium is lighted with sun and when they are in shoal, not in couple.