The gikknets have some little to do with it but it continues to be MARINE MIXED STOCK fisheries on immature fish that prevents fish fro getting older. The gallant, in the terminal area, is fishing on adults who have made the irreversible decision to spawn. If the fishery is size selective-and Ricker saw it working both ways-the survivors who spawn will be larger or smaller than the total return, pre-fishing, was.l