Well thanks from the advice, and I have put about 5 of them in my pond so far, will probably wait until next spring or fall to add more, just to see if they happen to spawn.

But since I addes some F1 LMB last December, if any of them survived they should spawn next spring as well so I may have either one or a hybrid of River\F1 LMB.

I have considered getting a few Northern LMB as well just for a mix.

Any thoughts on that?

What about darters, could or should they be moved to a pond?