{"id":312,"date":"2019-07-27T15:05:48","date_gmt":"2019-07-27T15:05:48","guid":{"rendered":"https:\/\/anadromos.pt\/migratory-fish\/"},"modified":"2023-03-09T12:23:49","modified_gmt":"2023-03-09T12:23:49","slug":"migratory-fish","status":"publish","type":"page","link":"https:\/\/anadromos.pt\/en\/migratory-fish\/","title":{"rendered":"MIGRATORY FISH"},"content":{"rendered":"\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-20c17-6476b1965c7235719edfd78fbd7fd87b\">\n.avia-section.av-20c17-6476b1965c7235719edfd78fbd7fd87b{\nbackground-repeat:no-repeat;\nbackground-image:url(https:\/\/anadromos.pt\/wp-content\/uploads\/2019\/07\/migradores-a.jpg);\nbackground-position:50% 50%;\nbackground-attachment:scroll;\n}\n<\/style>\n<div id='av_section_1'  class='avia-section av-20c17-6476b1965c7235719edfd78fbd7fd87b main_color avia-section-default avia-no-border-styling  avia-builder-el-0  el_before_av_section  avia-builder-el-first  avia-full-stretch avia-bg-style-scroll av-minimum-height av-minimum-height-custom av-height-custom  av-section-with-video-bg container_wrap fullsize'  data-section-bg-repeat='stretch' data-av_minimum_height_px='300' data-section-video-ratio='4:3'><div  class='avia-slideshow av_slideshow_obj-1-69f5b8448c3a6 avia-slideshow-featured av_slideshow avia-slide-slider av-slideshow-ui av-control-default av-slideshow-manual av-loop-once av-loop-manual-endless av-default-height-applied  av-section-video-bg avia-slideshow-1' data-slideshow-options=\"{&quot;animation&quot;:&quot;slide&quot;,&quot;autoplay&quot;:false,&quot;loop_autoplay&quot;:&quot;once&quot;,&quot;interval&quot;:5,&quot;loop_manual&quot;:&quot;manual-endless&quot;,&quot;autoplay_stopper&quot;:false,&quot;noNavigation&quot;:false,&quot;bg_slider&quot;:false,&quot;keep_padding&quot;:false,&quot;hoverpause&quot;:false,&quot;show_slide_delay&quot;:0}\"  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><ul class='avia-slideshow-inner ' style='padding-bottom: 28.666666666667%;'><li  data-controls='disabled' data-mute='aviaTBaviaTBvideo_mute' data-loop='1' data-disable-autoplay=''  data-video-ratio='1.3333333333333' class='avia-slideshow-slide av_slideshow_obj-1-69f5b8448c3a6__0  av-video-slide  av-video-service-youtube  av-hide-video-controls av-mute-video av-loop-video  av-single-slide slide-1 slide-odd'><div data-rel='slideshow-1' class='avia-slide-wrap '   ><div class='av-click-overlay'><\/div><div class='mejs-mediaelement'  itemprop=\"video\" itemtype=\"https:\/\/schema.org\/VideoObject\" ><div height='1600' width='900' class='av_youtube_frame' id='player_312_769535873_985965165'  data-autoplay='0'  data-videoid='Uj_YalCK42o'  data-hd='1'  data-rel='0'  data-wmode='opaque'  data-loop='0'  data-version='3'  data-autohide='1'  data-color='white'  data-controls='0'  data-iv_load_policy='3'  data-original_url='https:\/\/www.youtube.com\/watch?v=Uj_YalCK42o' ><\/div><\/div><div class=\"av-click-to-play-overlay\"><div class=\"avia_playpause_icon\"><\/div><\/div><\/div><\/li><\/ul><\/div><div class='container av-section-cont-open' style='height:300px'><main  role=\"main\" itemprop=\"mainContentOfPage\"  class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-312'><div class='entry-content-wrapper clearfix'>\n<\/div><\/div><\/main><!-- close content main element --><\/div><\/div><div id='av_section_2'  class='avia-section av-274y1-f6dc5ad77ba922e9693cb0202591f407 main_color avia-section-default avia-no-border-styling  avia-builder-el-1  el_after_av_section  avia-builder-el-last  avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-312'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1jn19-4157989f82c8f254786c3ccf8d382eda\">\n.flex_column.av-1jn19-4157989f82c8f254786c3ccf8d382eda{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-1jn19-4157989f82c8f254786c3ccf8d382eda av_one_full  avia-builder-el-2  avia-builder-el-no-sibling  first flex_column_div av-zero-column-padding  '     ><section  class='av_textblock_section av-jvjn3wle-c627176f9e6ca7df51910d1ddf88df5d '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h3>MIGRATORY SPECIES<\/h3>\n<\/div><\/section><br \/>\n<section  class='av_textblock_section av-jvjn5ljh-c213916d4a8cbb9b05b64d93555a9884 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Of the over 32\u00a0000 known fish species, 58% live in the sea, 41% in freshwater and less than 1% use both ecosystems during their lifetime, which are known as diadromous species. The word <em>diadromous<\/em> came from the ancient Greek and it\u2019s composed by two words \u201cDia\u201d and \u201cDromos\u201d meaning \u201cthrough\u201d and \u201crunning\u201d. In other words, anadromous fish \u201crun\u201d, i.e. migrate, through distinct ecosystems, freshwater of rivers and saltwater of the sea.<\/p>\n<ol>\n<li>Anadromous Migrator (from Greek \u201cAna\u201d, \u201cup\u201d): Diadromous species with a feeding and growing stage at sea before adults migrate to the rivers to reproduce (e.g. salmon, sea lamprey, shads and sturgeon);<\/li>\n<li>Catadromous Migrator (from Greek \u201cCata\u201d, \u201cdown\u201d): Diadromous species with a feeding and growing stage at rivers before migrating to sea to reproduce (e.g. European eel, mullet and rock flounder).<\/li>\n<\/ol>\n<\/div><\/section><br \/>\n<section  class='av_textblock_section av-jvjn6rsu-af71f9b656ceb8f4cebde2570c2ddc40 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Of all threats to diadromous fish survival in continental aquatic ecosystems, due to their particularly lifecycle and according to the high commercial value that some of these species can achieve, the ones contributing the most to stock depletion are:\u00a0 i) continual longitudinal interruption and habitat loss due to dam and weir construction; ii) overfishing and furtive activities.<\/p>\n<p>Sea lamprey and shads are generally distributed through all major national river basins, being more abundant in the central and northern part of the country. On the other hand, Atlantic salmon and trout occur mainly at the North part of the country, especially at Minho and Lima rivers.<\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jvjt0tym-953e89cdbf3f3fbe67ce5fe87df6071e\">\n.avia-image-container.av-jvjt0tym-953e89cdbf3f3fbe67ce5fe87df6071e img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-jvjt0tym-953e89cdbf3f3fbe67ce5fe87df6071e .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-jvjt0tym-953e89cdbf3f3fbe67ce5fe87df6071e av-styling- avia-align-center  avia-builder-el-6  el_after_av_textblock  el_before_av_hr '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img fetchpriority=\"high\" class='wp-image-355 avia-img-lazy-loading-not-355 avia_image ' src='https:\/\/anadromos.pt\/wp-content\/uploads\/2019\/07\/PEIXES-MIGRADORES-EN.jpg' alt='' title=''  height=\"518\" width=\"800\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><br \/>\n<div  class='hr av-14pdp-5fa30b811f0a6274561c208ecdc9e2eb hr-default  avia-builder-el-7  el_after_av_image  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  class='av_textblock_section av-jvjn3wle-c627176f9e6ca7df51910d1ddf88df5d '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p><strong>Sea lamprey, <em>Petromyzon marinus <\/em>L.<\/strong><\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jyg6se1d-71c2be4af4e0c76e73d56ae5606dd66e\">\n.avia-image-container.av-jyg6se1d-71c2be4af4e0c76e73d56ae5606dd66e img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-jyg6se1d-71c2be4af4e0c76e73d56ae5606dd66e .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-jyg6se1d-71c2be4af4e0c76e73d56ae5606dd66e av-styling- avia-align-center  avia-builder-el-9  el_after_av_textblock  el_before_av_textblock '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img fetchpriority=\"high\" class='wp-image-373 avia-img-lazy-loading-not-373 avia_image ' src='https:\/\/anadromos.pt\/wp-content\/uploads\/2019\/07\/lampreia-marinha.jpg' alt='' title=''  height=\"399\" width=\"600\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-jvjn6rsu-af71f9b656ceb8f4cebde2570c2ddc40 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\"><strong>Conservation status in Portugal: Vulnerable (VU).<\/strong><\/p>\n<p>Adults live in the ocean, migrating to rivers to reproduce. For this they prefer areas of high abundance of pebbles, gravel and sand. Larvae live buried in the sandy riverbed and prefer shallow areas, with weak currents and shadowed waters. Larvae are filters, but adults are parasites and feed off the blood of other fish. Adults don\u2019t feed during reproductive migration. This species occurs in the main basins north of the Sado river and, although less abundant, in the Guadiana river basin. It begins its reproductive migration in December, which peaks between February and April. It is a <strong>semelparous<\/strong> species &#8211; it reproduces only once during its entire lifecycle, dying after spawning. Obstacles to migration, consequent loss of habitat, and overfishing \u2013 including poaching activities \u2013 are the main threats this species faces in national territory.<\/p>\n<\/div><\/section><br \/>\n<div  class='hr av-14pdp-5fa30b811f0a6274561c208ecdc9e2eb hr-default  avia-builder-el-11  el_after_av_textblock  el_before_av_hr '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jvjt1rz0-c6f01250c244e8565b0293dde4682cb4\">\n#top .hr.hr-invisible.av-jvjt1rz0-c6f01250c244e8565b0293dde4682cb4{\nheight:50px;\n}\n<\/style>\n<div  class='hr av-jvjt1rz0-c6f01250c244e8565b0293dde4682cb4 hr-invisible  avia-builder-el-12  el_after_av_hr  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  class='av_textblock_section av-jvjn3wle-c627176f9e6ca7df51910d1ddf88df5d '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h4 style=\"text-align: center;\">Allis shad, <em>Alosa alosa<\/em>, L.<\/h4>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jyg6uc7o-764f37d0208e3de08ca9796e575797e4\">\n.avia-image-container.av-jyg6uc7o-764f37d0208e3de08ca9796e575797e4 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-jyg6uc7o-764f37d0208e3de08ca9796e575797e4 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-jyg6uc7o-764f37d0208e3de08ca9796e575797e4 av-styling- avia-align-center  avia-builder-el-14  el_after_av_textblock  el_before_av_textblock '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img fetchpriority=\"high\" class='wp-image-377 avia-img-lazy-loading-not-377 avia_image ' src='https:\/\/anadromos.pt\/wp-content\/uploads\/2019\/07\/savel.jpg' alt='' title=''  height=\"399\" width=\"600\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-jvjn6rsu-af71f9b656ceb8f4cebde2570c2ddc40 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\"><strong>Conservation status in Portugal: Endangered (EN).<\/strong><\/p>\n<p>Pelagic species that occupies the water column during its period in marine habitat. Its spawning habitat can be characterized by a succession of both deep, slow current areas, and shallower, fast current areas. It occurs in rivers Minho, Lima, C\u00e1vado, Douro, Vouga, Mondego, Tejo and Guadiana. Its upstream migration to rivers begins in February and the reproduction occurs until June. Most of these fish die after spawning. It is a planktivore species, and it doesn\u2019t feed during reproductive migration. Loss of longitudinal connectivity within water courses and overfishing are the main threats to this species.<\/p>\n<\/div><\/section><br \/>\n<div  class='hr av-14pdp-5fa30b811f0a6274561c208ecdc9e2eb hr-default  avia-builder-el-16  el_after_av_textblock  el_before_av_hr '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jvjt1rz0-c6f01250c244e8565b0293dde4682cb4\">\n#top .hr.hr-invisible.av-jvjt1rz0-c6f01250c244e8565b0293dde4682cb4{\nheight:50px;\n}\n<\/style>\n<div  class='hr av-jvjt1rz0-c6f01250c244e8565b0293dde4682cb4 hr-invisible  avia-builder-el-17  el_after_av_hr  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  class='av_textblock_section av-jvjn3wle-c627176f9e6ca7df51910d1ddf88df5d '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h4 style=\"text-align: center;\"><strong>Twaite shad<\/strong>, <em>Alosa fallax<\/em> (Lacep\u00e8de, 1803)<\/h4>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jyg6u3hw-d115c66d00634172d6b9352bc4cf0850\">\n.avia-image-container.av-jyg6u3hw-d115c66d00634172d6b9352bc4cf0850 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-jyg6u3hw-d115c66d00634172d6b9352bc4cf0850 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-jyg6u3hw-d115c66d00634172d6b9352bc4cf0850 av-styling- avia-align-center  avia-builder-el-19  el_after_av_textblock  el_before_av_textblock '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img fetchpriority=\"high\" class='wp-image-376 avia-img-lazy-loading-not-376 avia_image ' src='https:\/\/anadromos.pt\/wp-content\/uploads\/2019\/07\/savelha.jpg' alt='' title=''  height=\"399\" width=\"600\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-jvjn6rsu-af71f9b656ceb8f4cebde2570c2ddc40 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\"><strong>Conservation status in Portugal: Vulnerable (VU).<\/strong><\/p>\n<p>Like its congener, this species is pelagic. However, the preferred spawning habitat differs, as this species remains downstream, in the lower section of the rivers. It occurs in the basins of rivers Minho, Lima, C\u00e1vado, Douro, Vouga, Mondego, Tejo, Sado, Mira and Guadiana. It\u2019s distinguishable from allis shad by its smaller size and by the presence of 4 to 8 dark spots in its dorso. Species upstream migration to rivers begins in February and it can reproduce until June. It is mainly planktivore, but it can occasionally feed on smaller fish. During reproductive migration, adults don\u2019t feed. Like the allis shad, longitudinal connectivity within river basins and overfishing are the main threats the species faces.<\/p>\n<\/div><\/section><br \/>\n<div  class='hr av-14pdp-5fa30b811f0a6274561c208ecdc9e2eb hr-default  avia-builder-el-21  el_after_av_textblock  el_before_av_hr '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jvjt1rz0-c6f01250c244e8565b0293dde4682cb4\">\n#top .hr.hr-invisible.av-jvjt1rz0-c6f01250c244e8565b0293dde4682cb4{\nheight:50px;\n}\n<\/style>\n<div  class='hr av-jvjt1rz0-c6f01250c244e8565b0293dde4682cb4 hr-invisible  avia-builder-el-22  el_after_av_hr  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  class='av_textblock_section av-jvjn3wle-c627176f9e6ca7df51910d1ddf88df5d '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h4 style=\"text-align: center;\"><strong>Atlantic salmon<\/strong>, <em>Salmo salar<\/em> L.<\/h4>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jyg6trbp-1da956de237e96a71dd6369a7b5c693f\">\n.avia-image-container.av-jyg6trbp-1da956de237e96a71dd6369a7b5c693f img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-jyg6trbp-1da956de237e96a71dd6369a7b5c693f .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-jyg6trbp-1da956de237e96a71dd6369a7b5c693f av-styling- avia-align-center  avia-builder-el-24  el_after_av_textblock  el_before_av_textblock '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img fetchpriority=\"high\" class='wp-image-391 avia-img-lazy-loading-not-391 avia_image ' src='https:\/\/anadromos.pt\/wp-content\/uploads\/2019\/07\/salmao-a.jpg' alt='' title=''  height=\"399\" width=\"600\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-jvjn6rsu-af71f9b656ceb8f4cebde2570c2ddc40 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\"><strong>Conservation status in Portugal: Critically Endangered (CR).<\/strong><\/p>\n<p>A benthopelagic species, distributed throughout all the north Atlantic. In national territory it occurs mainly in the rivers Minho and Lima. Male mandibles display a more pronounced curvature before and after reproduction. After hatching, this species usually lives 1 to 2 years in fresh water, period after which it begins its downstream migration towards the ocean. During this migration, in estuarine waters, the fish begin a transformation process known as smoltification, in which it acquires a silver hue and adaptions to a maritime environment. It spends the winter in the ocean and then return to their hatch area to spawn. Contrary to its Pacific congenial, the Atlantic salmon can reproduce more than once.<\/p>\n<p>In Portugal it is estimated that its effective population is too low to be considered a viable resource for commercial exploration, which increases its conservational interest.<\/p>\n<\/div><\/section><br \/>\n<div  class='hr av-14pdp-5fa30b811f0a6274561c208ecdc9e2eb hr-default  avia-builder-el-26  el_after_av_textblock  el_before_av_hr '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jvjt1rz0-c6f01250c244e8565b0293dde4682cb4\">\n#top .hr.hr-invisible.av-jvjt1rz0-c6f01250c244e8565b0293dde4682cb4{\nheight:50px;\n}\n<\/style>\n<div  class='hr av-jvjt1rz0-c6f01250c244e8565b0293dde4682cb4 hr-invisible  avia-builder-el-27  el_after_av_hr  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  class='av_textblock_section av-jvjn6rsu-af71f9b656ceb8f4cebde2570c2ddc40 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h4 style=\"text-align: center;\">Sea trout, <em>Salmo trutta<\/em> L.<\/h4>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jyg6teln-432eea96424b22ed3c16c6f7cad8b068\">\n.avia-image-container.av-jyg6teln-432eea96424b22ed3c16c6f7cad8b068 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-jyg6teln-432eea96424b22ed3c16c6f7cad8b068 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-jyg6teln-432eea96424b22ed3c16c6f7cad8b068 av-styling- avia-align-center  avia-builder-el-29  el_after_av_textblock  el_before_av_textblock '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img fetchpriority=\"high\" class='wp-image-404 avia-img-lazy-loading-not-404 avia_image ' src='https:\/\/anadromos.pt\/wp-content\/uploads\/2019\/07\/truta-b.jpg' alt='' title='truta-b'  height=\"399\" width=\"600\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-jvjn6rsu-af71f9b656ceb8f4cebde2570c2ddc40 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\"><strong>Conservation status in Portugal: Critically Endangered (CR).<\/strong><\/p>\n<p>Like the Atlantic salmon, it is a benthopelagic species distributed in the north Atlantic, and it occurs in national territory mostly in the rivers Minho and Lima, but also in C\u00e1vado, Douro, Vouga and Mondego. It is easily mistaken with its congener <em>Salmo salar<\/em>, its superior maxilla being a distinctive factor, as it is more prolonged and can extend past the posterior edge of the eye. It also displays an adipose fin with a red margin. This species can present two distinctive forms: (i) <strong>Holobiotic<\/strong> \u2013 spends its entire life cycle in freshwaters and can be distinguished from amphibiotic form by its brownish colour with light reddish-centred patches; and (ii) <strong>Amphibiotic \u2013<\/strong> anadromous migrator, it also undergoes a smotification process, adapting to life on the ocean, where it reaches its adults phase and sexual maturity, upon which it returns river basins to spawn. Can be distinguished from holobiotic form by its silver colour and dark patches.<\/p>\n<p>Like the salmon, its effective population is estimated to be too low to be considered a viable resource for commercial exploration. Both species are significantly produced in aquaculture, being that only the trout, especially its holobiotic form, the brown trout, is cultivated for commercial purposes, in Portugal.<\/p>\n<\/div><\/section><\/p><\/div>\n\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-312","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>MIGRATORY FISH - Portal da Pesca: An\u00e1dromos<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/anadromos.pt\/peixes-migradores\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"MIGRATORY FISH - 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