Also caught three cats (please I.D. below) that I am worried about. Definitely didn't stock them, but when I drained the pond two years ago they were there. I couldn't get an I.D. back then because of the muck. Caught them using small pieces of worm on a bobber about a foot under water (total depth was probably 3-4 feet).
Thoughts? Concerns?
I think the 'cats' are bullheads, unfortunately.