Hard for me to tell from that picture.
I had the same luck as Shorty with the fish truck. Lots of GSF and/or hybrids mixed in with what was supposed to be RES.
I got replacement RES and put in a different pond along with some CNBG (my sediment pond with no other fish in it). Now I have GSF in it. I did not check every fish but looked very closely at the bags to ensure all fish looked alike. Problem is with 1"-2" fish, at that small size it is easy to mis-identify. At least for me it is. So either there were some GSF again in the stocking fish, or they entered the pond in some other fashion. The only other fish put in that pond were 4 adult RES last fall that I caught out of the big pond and I'm pretty certain I did not mis-identify those 6-8" fish. So who knows where the GSF came from for sure. I've been trapping them with minnow traps and removing them. I'm not too worried about them because in my main pond I have such a population of BG that there is no chance for the GSF getting control of the pond. Where they really cause problems is if the GSF get established before the other forage fish and even predators get established. That large mouth and aggressive nature can play havoc on the rest of the stocking plan. Where my predators and forage fish are well established in my main pond (which the sediment pond empties into), I'm not so worried about it. I will try to keep their numbers down in the sediment pond though, at least until my RES and CNBG get off a good spawn in that pond. I actually like the GSF genes and before finding out I had GSF in this sediment pond, considered the idea of putting in one adult gravid GSF female just so I could get some RES/GSF hybrids. I sure will not do that now. Maybe I will get some hybrids from the current GSF in there. Eventually some small LMB will swim upstream via the overflow from my main pond and this sediment pond will have predators in it. Until that happens, I'm using it as a forage pond and brood pond for RES.
Edit: I did put FHM from my forage pond in this sediment pond also, but no GSF in my forage pond so not introduced via the FHM stocking. I check all of them as they were put in the pond.
Last edited by snrub; 05/31/15 12:12 AM.