Yes - Theo has it correct - young tilapia.
Excellent!
They will make a great late season forage for my LMB & CC.
The adults do an excellent job of cleaning up any pellet waste around the feeder.
So far, I have seen zero negatives to stocking them. They do eat pellets that would otherwise go to CC & BG, but there are only 8 fish in .5 acre BOW, so it's not a big deal.
They won't survive the winter, but as of right now, I plan to stock them again in the spring.