i have a six foot tank with 4 dwarf gourami 3 convict cichlid 2 rainbow cichlid 1 double black angel 4 koi angel 2 kribensis 2 silver dollars 2 sailfin mollies 2 mollies 5 zebra danios 3 bala shark 1 red tailed shark 4 clown loach 2 common plec 1 peppered cory catfish 2 albino cory catfish 1 featherfin catfish i also have a three foot tanks which has loads of guppys, white cloud minnows and rainbow cichlid fry in it i also have 10 two foot tanks that i am going to use to raise fry in still setting these up but hope to bring up some nice fish in them