John,
I hope I’ve had more recruitment than just the one year, but haven’t seen any others.
If I start seeing a few more recruits, I may let the kids keep another of the original stockers. Looks like they “may” live a bit longer than I originally thought.

9 yr old pond, 1 ac, 15' deep.
RES, YP, GS, FHM (no longer), HBG (going away), SMB, and HSB (only one seen in 5 yrs) Restocked HSB (2020) Have seen one of these.
I think that's about all I should put in my little pond.
Otter attack in 2023