Ok, heres a very basic question for ya. I have 9 fish currently in my 29 gallon FW tank, 3 Buenas Aries Tetras, 3 Black Skirted Tetras, and 3 (I believe) Comlombian Tetras, they look like the Black skirted ones, except they are the dyed/painted? type. My question is what do I feed them and...