Pond Boss Forums INTRO Questions & Observations How did these fish arrive ?

Going from my experience (which granted is not scientific), I agree with Brian. I have three ponds that are probably as much as 50 years old and they do not have a single trash fish in them. I have a newly constructed pond which I stocked with coppernose BG and it has the evil greenies. In my case, it wasn't birds that put them there, it was the fish hatchery I bought the coppernose BG from.