Catch and Release is not about throwing into the water all fish caught. To eat fish from time to time is OK and it does not mean to not care of the water. Releasing a female full of eggs or what can be deem as a good spawner, setting free fish that has not yet reached sexual maturity, avoid to fill the fish basket prey of greedy instincts, this is the lifestyle that distinguishes the ecological and mature angler. To keep at times a fish for eating will do infinite less damage than managing a pristine ecosystem by filling it with unfit stocked fish and have it all put back into water.