Teleost

A small number of productive species including carp, salmon,<ref name=Scot2014>{{cite book |title=Scottish Fish Farm Production Survey 2014 |date=September 2015 |publisher=The Scottish Government/Riaghaltas na h-Alba |isbn=978-1-78544-608-5 |url=http://www.gov.scot/Publications/2015/09/6580}}</ref> [[tilapia]] and [[catfish]] are [[fish farming|farmed commercially]], producing millions of tons of protein-rich food per year. in 2016 the UN's [[Food and Agriculture Organization]] expected production to increase sharply so that by 2030, perhaps sixty-two percent of food fish would be farmed.<ref name=FishTo2030>{{cite web |title=Fish to 2030 : prospects for fisheries and aquaculture (Report 83177) |pages=1–102 |url=http://documents.worldbank.org/curated/en/2013/12/18882045/fish-2030-prospects-fisheries-aquaculture |publisher=Food and Agriculture Organization; World Bank Group |access-date=3 January 2016 |date=1 December 2013 |url-status=dead |archive-url=https://web.archive.org/web/20160202043706/http://documents.worldbank.org/curated/en/2013/12/18882045/fish-2030-prospects-fisheries-aquaculture |archive-date=2 February 2016}}</ref>

A small number of productive species including carp, salmon,<ref name=Scot2014>{{cite book |title=Scottish Fish Farm Production Survey 2014 |date=September 2015 |publisher=The Scottish Government/Riaghaltas na h-Alba |isbn=978-1-78544-608-5 |url=http://www.gov.scot/Publications/2015/09/6580}}</ref> [[tilapia]] and [[catfish]] are [[fish farming|farmed commercially]], producing millions of tons of protein-rich food per year. in 2016 the UN's [[Food and Agriculture Organization]] expected production to increase sharply so that by 2030, perhaps sixty-two percent of food fish would be farmed.<ref name=FishTo2030>{{cite web |title=Fish to 2030 : prospects for fisheries and aquaculture (Report 83177) |pages=1–102 |url=http://documents.worldbank.org/curated/en/2013/12/18882045/fish-2030-prospects-fisheries-aquaculture |publisher=Food and Agriculture Organization; World Bank Group |access-date=3 January 2016 |date=1 December 2013 |url-status=dead |archive-url=https://web.archive.org/web/20160202043706/http://documents.worldbank.org/curated/en/2013/12/18882045/fish-2030-prospects-fisheries-aquaculture |archive-date=2 February 2016}}</ref>

Fish are consumed fresh, or may be preserved by traditional methods, which include combinations of drying, [[smoking (cooking)|smoking]], and [[salting (food)|salting]], or [[fermentation]].<ref>{{cite web |title=Fish and fish products |url=http://www.fao.org/wairdocs/x5434e/x5434e0f.htm |publisher=Food and Agriculture Organization |access-date=8 April 2016 |archive-date=8 February 2019 |archive-url=https://web.archive.org/web/20190208173446/http://www.fao.org/WAIRdocs/x5434e/x5434e0f.htm |url-status=dead }}</ref> Modern methods of preservation include freezing, [[freeze-drying]], and heat processing (including the [[canning]] process). Frozen fish products include breaded or [[batter (cooking)|battered]] fillets, [[fish finger]]s and [[fishcake]]s. Fish meal is used as a food supplement for farmed fish and for livestock. Fish oils are made either from fish liver, especially rich in [[Vitamin A|vitamins A]] and [[Vitamin D|D]], or from the bodies of oily fish such as sardine and herring, and used as food supplements and to treat vitamin deficiencies.<ref>{{cite web |last1=Maqsood |first1=Sajid |last2=Singh |first2=Prabjeet |last3=Samoon |first3=Munir Hassan |last4=Wani |first4=Gohar Bilal |title=Various Fish and Fish Products Being Produced in Fish Processing Industries and Their Value Addition |url=http://aquafind.com/articles/Value-Added-Fish-Process.php |publisher=Aquafind (Aquatic Fish Database) |access-date=8 April 2016}}</ref>

Fish are consumed fresh, or may be preserved by traditional methods, which include combinations of drying, [[smoking (cooking)|smoking]], and [[salting (food)|salting]], or [[fermentation]].<ref>{{cite web |title=Fish and fish products |url=http://www.fao.org/wairdocs/x5434e/x5434e0f.htm |publisher=Food and Agriculture Organization |access-date=8 April 2016 |archive-date=8 February 2019 |archive-url=https://web.archive.org/web/20190208173446/http://www.fao.org/WAIRdocs/x5434e/x5434e0f.htm |url-status=dead }}</ref> Modern methods of preservation include freezing, [[freeze-drying]], and heat processing (such as in the [[canning]] process). Frozen fish products include breaded or [[batter (cooking)|battered]] fillets, [[fish finger]]s and [[fishcake]]s. Fish meal is used as a food supplement for farmed fish and for livestock. Fish oils are made either from fish liver, especially rich in [[Vitamin A|vitamins A]] and [[Vitamin D|D]], or from the bodies of oily fish such as sardine and herring, and used as food supplements and to treat vitamin deficiencies.<ref>{{cite web |last1=Maqsood |first1=Sajid |last2=Singh |first2=Prabjeet |last3=Samoon |first3=Munir Hassan |last4=Wani |first4=Gohar Bilal |title=Various Fish and Fish Products Being Produced in Fish Processing Industries and Their Value Addition |url=http://aquafind.com/articles/Value-Added-Fish-Process.php |url-status=dead |archive-url=https://web.archive.org/web/20111012121039/http://aquafind.com/articles/Value-Added-Fish-Process.php |archive-date=12 October 2011 |publisher=Aquafind (Aquatic Fish Database) |access-date=8 April 2016}}</ref>

Some smaller and more colourful species serve as [[aquarium]] specimens and [[pet]]s. [[Seawolf (fish)|Sea wolves]] are used in the leather industry. [[Isinglass]] is made from thread fish and drum fish.<ref name=Kisia2010/>

Some smaller and more colourful species serve as [[aquarium]] specimens and [[pet]]s. [[Seawolf (fish)|Sea wolves]] are used in the leather industry. [[Isinglass]] is made from thread fish and drum fish.<ref name=Kisia2010/>