I know this is a long shot without a pic but I figured cant hurt. I live in Portland Oregon and have a 1000 gallon pond outside. Last year I went down to another man made little pond in a housing development and got mosquitofish that had been stocked in there and these other little gold colored fish, I just figured they were goldfish, today I decided to catch some and put them in a tank inside just for kicks. They have grown like three times the size there about 4 inches long, completelly gold color, with rounded heads being the most distinctive feature, does anyone know what they are, does anyone else have these in man made stocked ponds, again, I know without a pic its a long shot but maybe I can at least get an Idea of what they are, any help would be great, thanks