"Studies have shown other fish species including largemouth bass also learn hook avoidance. But some species like whitefish don't seem to learn easily. Also repeated recapture of some individual fish and occasional capture of previously uncaught fish in heavily fished waters suggest that some fish learn slowly or not at all, while other are hard to catch regardless of fishing pressure."
"Do Released Fish Learn to Avoid Anglers" in June/July "In-Fisherman" Rick
