WHOO!!!

[Hooligan]

I'd reccomend either 6 clown loaches or 3 cause they play in pairs and 1 always needs a rest and it will rotate in whiich they play with

 

[Phantom Thief]

Bala sharks will not do in that tank. I forgot the specifics, i think it was 120 gallons for a school of them.

Secondly, clown loaches rarely get to 12" in captivity, 8" is far more common.

P.T.