Cow was fed mostly mollies and occasionally ghost shrimp. When he was really little, I fed him danios, but that was only for about a month until he was big enough to eat the shrimp.
I really want to understand this too. Im going to ask my professor, hes out of town right now, if we can do some sort of necropsy on him and look at his organs.
Right now hes sitting in a jar of formalin on my desk.