Put-and-take trout fisheries raise fish in hatcheries and stock them for recreational fishing, creating welfare challenges in both production and the stocking and fishing process.
Hatchery trout experience chronic welfare compromise from crowded rearing conditions before ever reaching recreational fisheries. Fin erosion from aggression in high-density pens is visible evidence of ongoing tissue damage and behavioral suppression. Stocked fish face acute stress during transport and stocking. Those that survive initial stocking often die from inability to adapt foraging behavior to natural prey. Welfare improvements in hatchery conditions reduce acute harm; the ecological argument for reducing stocking dependency in favor of wild population restoration addresses both welfare and conservation simultaneously.