Red, you have a perfect setup for helping us understand how fish might travel in unusual ways, or even in 'impossible' ways into a body of water. You have a big pond (1/2 acre) with only one species in it FHM. You also have traps and can sample it.
Since most of us observe secluded bodies of water somehow have more than one specie in it, we end up speculating about how they got there. Many interesting theories and almost everyone feels that given a larger body of water, it must self-propogate with diverse species somehow. But does it?
It would be interesting for you to keep sampling it and see if you can maintain a FHM only pond for a month? 6 months? a year maybe?
Share your findings with us. of course if there is another pond close by (sounds like there is) and if there is any heavy rains or water travelling from one to the other then this controlled trial is not so controlled after all.
