I sure wish I would have waited and added these to my pond. I am still trying to get my dad to add some to a pond we fish, I figure 50-100 of them would not hurt, and with all the LMB in the pond already I doubt much if any spawn would even make it.
My thought is if you remove the spawn areas for Crappie (any type), do you think they would still find a way to make it work, or would this fix the problem of over population.
I have been thinking of the fish we caught years ago and most were all the same size 11-13 inches and healthy, but one day we just could not catch them any more, and we never noticed any small ones, so either the LMB kept them in check, or maybe they never could really pull off a spawn.
I guess I will never really know, but sure makes one think.
