Fish have fed the masses since before Biblical Times. Now they have become livestock managed by the Government Herders.
I toss crappie back when I catch them as a bycatch, I am not a crappie fisher. It is my decision, not something forced on to me by others. Catch and release is my decision.
Many years ago, we fished and eat our catches. I enjoyed those meals. But I realized that catching was more fun than eating. So I kept less and less of all species. But still they decline. Trouble is, the Herders are promoting the fishing part to increase the larders that make them fatter. So now, much to my dismay at the attempts of my conservation methods, my fishing keeps declining. Can't really blame the ones that keep legal fish. Blame the herders that push them to buy more licenses.