Good Fish Guide
Trout, Brown or Sea
Method of production - Farmed
Production country - UK
Production method - Open net pens
Fish type - Oily fish
Rainbow trout is the most widely farmed trout species in the UK as it is produced for human consumption, however brown trout is also farmed in this country but mainly for restocking purposes. Brown trout is farmed in freshwater in open net pens tanks, pods and raceways adjacent to a good water supply such as a river. Water diverted into the farm in a constant flow and treated before being discharged. It takes about 7 months for trout to reach harvesting size of 300-400g in this system. Farming in open systems can have negative environmental impacts through direct discharges of organic matters and nutrients leading to local environmental changes and farmed fish escapes, however in the case of trout, all the described potential impacts are of limited scale, since this aquaculture sector is quite limited in its range and volume.
Brown or sea trout belongs to the salmon family. It is anadromous i.e. adapted to life in both fresh and sea water. There are 2 types - the migratory sea trout and the non-migratory brown trout. It matures in 3-4 years and can grow up to 140cm and live up to 38 years. Spawns in winter from October to January.
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Open net pens
Rainbow trout is the most widely farmed trout species in the UK as it is produced for human consumption, however brown trout is also farmed in this country but mainly for restocking purposes. Brown trout is farmed in open net pens, either in brackish or f
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.
Tacon A.G.J., (2005). State of information on salmon aquaculture feed and the environment.
Report from the Technical Working Group on Feeds. 81 pages.www.worldwildlife.org/aquadialogues
FAO Cultured Species Factsheets: http://www.fao.org/fishery/culturedspecies/Salmo_trutta/en
Water Environment (Controlled Activities) (Scotland) Regulations 2011 (CAR) [http://www.legislation.gov.uk/ssi/2011/209/contents/made] enforced by SEPA [http://www.sepa.org.uk/water/water_regulation/regimes/aquaculture/marine_aquaculture.aspx]
Marine Scotland. http://www.scotland.gov.uk/Topics/marine/Licensing/SealLicensing
Aquaculture and Freshwater Fisheries Act (2012) , WEWS Act 2003. EIA (Scotland) Regulation 1999, Alien and Locally Absent Species in Aquaculture (2007) Europe."Health requirements & disease control:Aquatic Animal Health (Scotland) Regulations 2009, which implement Directive 2006/88/EC: http://www.legislation.gov.uk/ssi/2009/85/contents/made"
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