Bill,
So you think it's a natural bulking up with nutrients for developing eggs and milt, spurred by hormonal changes brought on in part by the photoperiod? I've seen where perch are quite active feeders under late ice.
Apparently even without the chill period required to develop gametes there is still a natural urge to bulk up?
Cody Note: Yes Cecil your paragraph above summed it up. Hormonal increases will stimulate feeding to prepare for spawning. I think many of your RAS female YP will develop eggs and lay them this spring.