I just got some Chinese algae eaters for my pond but upon getting home and doing some research I wonder if I maybe shouldn't have gotten them. Does anyone have any experience with them in their ponds? All I'm finishing is info of them in fish tanks. I'm reading that they can be aggressive / territorial and latch onto fish and either scar them horribly if not kill them if not removed. I have quite a few goldfish, minnows, 5 small koi, and 3 eleven inch koi. I've also read that they don't tolerate colder water temperatures well either. I live in Phoenix Arizona so I'm wondering if my pond will get cool enough in the winter to take care of the problem for me? There is absolutely zero possibility of catching these suckers in my 3500-ish gallon pond. I put in 6 of them. Anyone have any suggestions or advice as far as wether I screwed up by getting them or if I should be ok?