If they are both males, I almost would be tempted to leave them in there and grow a couple of monsters. They will get giant!
I guess until some females find their way in there

Those two buggers found my pond very quickly, it didn't have water in it for more than a few months and boom, they were in there.
They are 1 year old, and are already 8" or so, I guess they're supposed to max out at 9" and have a 6 year life span. They have feasted on tadpoles for sure!
Oh, at this point I have ZERO structure in the ponds, I never had the time to make anything. What should I put in there for the FHM, and how deep? I'm not fond of unsightly stacked pallets, I can see 5-6ft into the depth of the water in these ponds.