I've got a small tank with neons,guppies,rosey tetras, glowlites, a plec, some catfish and a few shrimp and some assasin snails that eat other snails that manage to find their way into the tank from hitching a lift off live plants. I'm in the middle of doing my living room out and once it's finished i'm gonna get a big tank for this room with some bigish fish in it. I used to keep oscars and hand feed them worms they were monsters but got rid of them a few years ago. good luck with your tank and don't add to many fish straight away or you'll find yourself loosing a few. Atb Kristian.