Stock it with the biggest fish you can find, so the Tank Nazi Police will get on your case lol just kidding. In my 75 I got mollies, tiger barbs, red tail sharks, tinfoil barbs, bala sharks, clown loaches, pleco, corys, convicts and an iridescent shark. When they get larger I'll move them into a bigger tank. I have some tank upgrades in mind for the future. The good thing about setting up a community of different fish is you get to know the fish behavior, which ones you like and you can plan on which ones will go into which tank.