I've got HSB, SMB, and YP for my predators. Right now, I would say, after stocking HBG two years ago, that they don't seem to be able to keep the HBG population under control. (I stocked very few HBG compared to other species) I catch HBG at a rate of two to one when fishing, comparing it to all other species combined.
I'm just wondering if I'll eventually end up with so many HBG that the only choice I'll have is to start LMB stocking. (Probably to the detriment of all my other fish.)
I had thought that HBG would produce 90% male offspring, so overpopulation wouldn't be a issue. Of course, I also heard they didn't bite swimmers.. wink

12 yr old pond, 1 ac, 15' deep.
RES, YP, GS, FHM (no longer), HBG (decreasing), SMB, and HSB (only two have been seen in 5 yrs)
I think that's about all I should put in my little pond.
Otter attack in 2023.