I have used goldfish for forage with success. However, one was able to survive a season and is now about 8 lbs! Quite a sight to see a bright orange and white goldfish that size. I have caught it twice and I have to say that it fought better than the Bass in the pond and so I have not killed it. The first time I caught it it struck a gold Phoebe! It has gotten pretty wise however and I have not been able to hook it in over 6 months using a variety of baits. On balance I wish it were not there and will have to deal with it sooner or later.