Good eating? Are they hard to filet or prepare? I recall the neighbor who bucket stocked my pond with a bucket full of mystery fish last fall. The only thing he admitted to having in the bucket was a bullhead.
If the bullhead can be helpful, and eat FA in the process of chasing other prey I'm happy to leave him there. That is as long as there is only 1 or I can control the numbers.
So your neighbor is Old Mudcat Joe. No doubt he was giggling uncontrollably behind a tree after he put some in your pond.
All bullhead caught in my pond are chucked onto the shore.