I have a 31g long tank about to be set up the measurements are 50inches by 12inches by 12inches... And now my question is what sort of fish could i put in it? I want lots of schooling fish i was thinking of maybe some long finned danios and maybe some cardinals and about 2 or so corys and a bristle nosed catfish what do you guys think? How many tetras and danios do you think i could put in there?