A friend just rehomed I think 5 goldfish and a pleco to a pond. She'd had them all in a 29 gallon tank because she didn't know about stunting and how hard it is to keep a tank clean with that many goldfish. They are all comet or common body type and had all gotten to about 6" or so. They were rehomed to a man made pond, heated in winter, that includes koi. One of the goldfish is blind. Is it likely to be able to get enough to eat in a pond setting? It has done okay in the tank with goldfish and a pleco, but grew slower/less than the other goldfish.