When I was a kid, I was taught that you were to never get caught dead with a perch in your bucket or on your stringer. I learned this from my Dad and his fishing buddies.
Perch were for the seagulls and eagles in the open water, and for the foxes that would come around out on the ice in the winter.
It was different back then because people simply didn't know any better. Catch-and-release still was a foreign concept to most anglers. If they caught a big fish of any species, they were bringing it home to show their friends and family—that's the way it was.