Trout, Rainbow

Oncorhynchus mykiss

Method of production — Farmed
Production country — Europe
Production method — Open system (pond and raceway)
Picture of Trout, Rainbow

Sustainability rating one info

Sustainability overview

Organic Certification Standards for farmed trout set comprehensive production standards which includes third party auditing and site inspection. These standards led to better overall environmental performance including: reduced stocking densities; limited use of medicines and chemicals in production and feed must be produced from byproducts of human consumption fisheries and organic certified plant raw materials.

Feed Resources

Criterion Score: 3

Feed for organically farmed trout is traceable and of organic origin for terrestrial ingredients. Marine ingredients are either sustainable or sourced from by-products from human consumption fisheries.


Environmental Impacts

Criterion Score: 1

The area of production is in low ecological sensitivity and is subject to a Environmental Impact Assessment and monitoring. A small amount of chemicals are used and their use monitored. Disease transfer and escapes are considered low risk.


Fish Health and Welfare

Criterion Score: 1

Welfare and humane slaughter criteria are included as part of the production standards.



Criterion Score: 1

There is no regional level planning but there is a range of regulations to address most of the issues of environmental concern and these are deemed to be broadly effective although specific data is lacking. The species is farmed to British Quality Trout standards.


Production method

Open system (pond and raceway)

Rainbow trout is the most widely farmed trout species in the UK, It is cultivated in freshwater tanks, ponds and raceways adjacent to a good water supply such as a river. Water is diverted into the farm at a constant flow and treated before being discharged.


Based on method of production, fish type, and consumer rating: only fish rated 2 and below are included as an alternative in the list below. Click on a name to show the sustainable options available.

Anchovy, anchovies
Arctic char
Herring or sild
Salmon, Atlantic (Farmed)
Salmon, Chinook, King Salmon
Salmon, Chum, Keta, Calico or Dog salmon
Salmon, Coho , Silver, White
Salmon, Pink, Spring , humpback
Salmon, Sockeye , Red Salmon, Bluebacks, Redfish
Sprat, whitebait
Trout, Rainbow
Tuna, albacore
Tuna, bigeye
Tuna, skipjack
Tuna, yellowfin


A member of the salmonid family, rainbow trout are native to western North America and range from Alaska to Mexico. They can grow up to 120cm in length and live to an average age of 11 years. They prefer freshwater and requires fast flowing water to breed


Soil Association organic standards aquaculture.Revision 16.4 June 2011. Available online at:

FAO 2005-2018. Cultured Aquatic Species Information Programme. Oncorhynchus mykiss. Cultured Aquatic Species Information Programme . Text by Cowx, I. G. In: FAO Fisheries and Aquaculture Department [online]. Rome. Updated 15 June 2005. [Cited 12 September 2018]

Council Directive 93/53/EC (OJ L 175 of 19/7/1993) measures for the control of certain fish diseases