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Fish discards are a widely recognized problem resulting from fisheries worldwide, and are of major concern for all sector players, from administrations, to fishermen, and scientists. However, non\u2010target species are seldom studied, and information on nutritional profiles and seasonal changes in nutritional properties is generally lacking. This study assessed the seasonal nutritional composition of two unexploited (<jats:italic>Serranus cabrilla<\/jats:italic>, <jats:italic>Capros aper<\/jats:italic>) and three low commercial value fish species (<jats:italic>Trachurus picturatus<\/jats:italic>, <jats:italic>Spondyliosoma cantharus<\/jats:italic>, and <jats:italic>Trigla lyra<\/jats:italic>), captured on the Portuguese coast over 1\u2009year. Significant seasonal variations were observed in the nutritional composition of all the species studied. Moisture and ash contents varied from 70% to 81% and from 5% to 13%, respectively. The maximum fat contents were 5% for <jats:italic>C.\u00a0aper<\/jats:italic> and 4% for <jats:italic>T.\u00a0picturatus<\/jats:italic>, allowing to classify all studied fishes as lean. The highest protein contents were recorded for <jats:italic>C.\u00a0aper<\/jats:italic> (25%) and <jats:italic>S.\u00a0cantharus<\/jats:italic> (20%). The unexploited and low commercial value fish species studied were shown to be good fat and protein sources, comparable to commonly consumed species, such as cod and salmon, having a great potential to become commonly consumed fish in Portugal.<\/jats:p>","DOI":"10.1002\/fsn3.2937","type":"journal-article","created":{"date-parts":[[2022,5,30]],"date-time":"2022-05-30T08:04:55Z","timestamp":1653897895000},"page":"3368-3379","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Seasonal study of the nutritional composition of unexploited and low commercial value fish species from the Portuguese coast"],"prefix":"10.1002","volume":"10","author":[{"given":"Ana M.","family":"Duarte","sequence":"first","affiliation":[{"name":"MARE \u2013 Marine and Environmental Sciences Centre Polytechnic of Leiria  Peniche Portugal"}]},{"given":"Frederica","family":"Silva","sequence":"additional","affiliation":[{"name":"MARE \u2013 Marine and Environmental Sciences Centre Polytechnic of Leiria  Peniche Portugal"},{"name":"MARE \u2013 Marine and Environmental Sciences Centre, Faculdade de Ci\u00eancias Universidade de Lisboa  Lisbon Portugal"}]},{"given":"Susana","family":"Mendes","sequence":"additional","affiliation":[{"name":"MARE \u2013 Marine and Environmental Sciences Centre ESTM, Polytechnic of Leiria  Peniche Portugal"}]},{"given":"Filipa R.","family":"Pinto","sequence":"additional","affiliation":[{"name":"MARE \u2013 Marine and Environmental Sciences Centre Polytechnic of Leiria  Peniche Portugal"}]},{"given":"S\u00f3nia","family":"Barroso","sequence":"additional","affiliation":[{"name":"MARE \u2013 Marine and Environmental Sciences Centre Polytechnic of Leiria  Peniche Portugal"}]},{"given":"Elisabete","family":"Silva","sequence":"additional","affiliation":[{"name":"MARE \u2013 Marine and Environmental Sciences Centre, Faculdade de Ci\u00eancias Universidade de Lisboa  Lisbon Portugal"}]},{"given":"Ana","family":"Neves","sequence":"additional","affiliation":[{"name":"MARE \u2013 Marine and Environmental Sciences Centre, Faculdade de Ci\u00eancias Universidade de Lisboa  Lisbon Portugal"}]},{"given":"Vera","family":"Sequeira","sequence":"additional","affiliation":[{"name":"MARE \u2013 Marine and Environmental Sciences Centre, Faculdade de Ci\u00eancias Universidade de Lisboa  Lisbon Portugal"},{"name":"Departamento de Biologia Animal, Faculdade de Ci\u00eancias Universidade de Lisboa  Lisbon Portugal"}]},{"given":"Maria\u00a0Filomena","family":"Magalh\u00e3es","sequence":"additional","affiliation":[{"name":"Departamento de Biologia Animal, Faculdade de Ci\u00eancias Universidade de Lisboa  Lisbon Portugal"},{"name":"CE3C \u2013 Centre for Ecology, Evolution and Environmental Changes Faculdade de Ci\u00eancias, Universidade de Lisboa  Lisbon Portugal"}]},{"given":"Rui","family":"Rebelo","sequence":"additional","affiliation":[{"name":"Departamento de Biologia Animal, Faculdade de Ci\u00eancias Universidade de Lisboa  Lisbon Portugal"},{"name":"CE3C \u2013 Centre for Ecology, Evolution and Environmental Changes Faculdade de Ci\u00eancias, Universidade de Lisboa  Lisbon Portugal"}]},{"given":"Carlos","family":"Assis","sequence":"additional","affiliation":[{"name":"MARE \u2013 Marine and Environmental Sciences Centre, Faculdade de Ci\u00eancias Universidade de Lisboa  Lisbon Portugal"},{"name":"Departamento de Biologia Animal, Faculdade de Ci\u00eancias Universidade de Lisboa  Lisbon Portugal"}]},{"given":"Ana Rita","family":"Vieira","sequence":"additional","affiliation":[{"name":"MARE \u2013 Marine and Environmental Sciences Centre, Faculdade de Ci\u00eancias Universidade de Lisboa  Lisbon Portugal"},{"name":"Departamento de Biologia Animal, Faculdade de Ci\u00eancias Universidade de Lisboa  Lisbon Portugal"}]},{"given":"Leonel Serrano","family":"Gordo","sequence":"additional","affiliation":[{"name":"MARE \u2013 Marine and Environmental Sciences Centre, Faculdade de Ci\u00eancias Universidade de Lisboa  Lisbon Portugal"},{"name":"Departamento de Biologia Animal, Faculdade de Ci\u00eancias Universidade de Lisboa  Lisbon Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8008-9839","authenticated-orcid":false,"given":"Maria Manuel","family":"Gil","sequence":"additional","affiliation":[{"name":"MARE \u2013 Marine and Environmental Sciences Centre ESTM, Polytechnic of Leiria  Peniche Portugal"}]}],"member":"311","published-online":{"date-parts":[[2022,5,30]]},"reference":[{"key":"e_1_2_6_2_1","first-page":"37","article-title":"Stability of smoked fish, horse mackerel (Trachurus trachurus) by different methods and storage at room temperature","volume":"1","author":"Adeyemi O. 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