Holy S***!!! This can't be for real. That would easily be the absolute most overstocked tank i've ever heard of. Im with necro. Even if you bought all of them as babies if they didnt kill eachother they would have outgrown that tank within a few months if that. Even with daily waterchanges the health of the fish cannot be good.
I reccomend that you begin dismantleing your collection or begin a massive pond. I dont want to be mean, but for the sake of the fish these are your only two courses of action.