Thanks everyone. Ill look around. As far as my red eared slider being a problem. He is very small and so far has shown no interest in chasing the fish. He does form time to time follow the ghost shrip around. I know he will eventually become an agressive hunter of anything small enough to eat. I have another tank with his name on it for when that day comes.
As for the Serpaes not mixing well. Is is a fin nipping problem or are the angels the problem?