just get a couple of decent fish and make them better, ive been given fish with massive fin rot, they came in my tank saddened and without will to survive, 1 of my 2 fish with the fin rot has made full recovery and my other one (who appears to be pre-mature because of her round head) is getting better, once the back tear in the tail recovers the will look great, but anyways just get decent ones your not gonna find the BEST fish no place can keep great goldfish, what im saying is theyll grow to love their new home and nnot be so depressed in a cramped tank