Given a 500 gallon tank, would a single tinfoil barb be able to coexist peacefully with a red-eared slider? There will defintely be hiding places for the barb to to rest in where the turtle won't be able to get to him. If that's the case, will the barb stand a good chance of surviving? Or would a convict cichild be more capable of defending itself from predation by the turtle? Thanks in advance.