Rainbow trout are among the most widely farmed salmonid species. Welfare improvements in trout aquaculture are advancing through research and certification schemes.
Trout welfare has advanced significantly as a research priority within aquaculture science. Evidence that rainbow trout experience nociception and show stress responses with welfare significance has driven development of more rigorous production standards. Key welfare improvements include reduced stocking density, better water quality management, feeding optimisation to reduce competition, and stunning before slaughter. Progressive producers are also investigating environmental enrichment approaches that reduce aggression and support natural behaviour expression. Certification schemes including RSPCA Assured in the UK provide consumers with a means to identify higher welfare products.