The true non-selective, age destroying, size destroying fisheries have historically been the marine mixed stock hook and line. Commercial troll and rec.

Fisheries have to evolve, not just the commercial fisheries because dead fish don't spawn and it really doesn't matter how they die. That wild black mouth that is released and dies is just as much a non-spawner as the adult wild fish that is "incidentally" killed in a gill net in its home stream.

Traps, fish wheels, dipnets, and reef nets that are actively tended are probably best for selectivity. In order to save and restore our fish there does need to be a complete reboot of the manner in which they are harvested. All sectors need to be involved. I doubt it will happen because of the amount of money already invested.