How many of each could you keep in a 29 gallon? I was told that you could keep 30 inches of fish in a 29 Gallon- meaning 3 cherry barbs, five danios, and either four corydoras or a bn.Either would be ok although I'd keep 6 corys or 1 BN...& a few more barbs. 5 is also a minimum for zebra danios. You have the room...