One man's trash is another man's treasure. What makes fish desirable to me are the taste, the fight, and compatibility with my pond's ecosystem.

Carp, shad, catfish, bowfin, green sunfish, goggle eye, and gar to name a few, are not welcome in my pond. They have at least 1 trait I can not live with. Therefore, I consider them trash fish. But there are millions of people who will swear I'm wrong.

I'm glad it's my pond and I can choose for myself. If a committee decided what species had to go into it, I would probably convert it to a landfill. :p