I've got only RES and FHM in my forage pond. Been trying to catch a single female GSF that I can tell for certain is gravid with eggs and put in with the RES to see if I can get some RES/GSF hybrids.
Have not caught the GSF yet that I've been certain it is a female. My understanding is the other cross with male GSF does not happen much naturally. I darn sure do not want a female and a male GSF in there.
I've only had clear enough water to observe the RES on nests once. They were fairly small last year (4-5") and was not sure they spawned. But have caught two 2" RES in that forage pond in the last couple weeks in minnow trap so they at least got some reproduction. May try to pull a seine through shallower part of the pond when it warms up and see if I have more.
