{"id":2523,"date":"2026-08-03T17:15:55","date_gmt":"2026-08-03T20:15:55","guid":{"rendered":"https:\/\/lillo.org.ar\/uel\/?page_id=2523"},"modified":"2026-08-03T17:15:55","modified_gmt":"2026-08-03T20:15:55","slug":"hidden-diversity-in-the-parana-river-basin-a-new-species-of-phenacorhamdia-siluriformes-heptapteridae-from-the-bermejo-river-argentina","status":"publish","type":"page","link":"https:\/\/lillo.org.ar\/uel\/hidden-diversity-in-the-parana-river-basin-a-new-species-of-phenacorhamdia-siluriformes-heptapteridae-from-the-bermejo-river-argentina\/","title":{"rendered":"Hidden diversity in the Paran\u00e1 River basin: a new species of <i>Phenacorhamdia<\/i> (Siluriformes: Heptapteridae) from the Bermejo River, Argentina"},"content":{"rendered":"<p><em>Phenacorhamdia\u00a0<\/em>comprises 15 species distributed across the major river basins of South America,with\u00a0P. tenebrosa\u00a0beingthe only species recorded in Argentina.\u00a0After the examination of specimens of\u00a0<em>Phenacorhamdia\u00a0<\/em>from the upper Bermejo River basin, Paran\u00e1 River basin, in northwestern Argentina, we conclude that they belong to a new species which is described herein. The new species is distinguished from the remaining members of the genus by a combination of non-unique characters including: maxillary barbel surpassing the distal tip of the adpressed pectoral fin; light-brown background coloration of the body; the conical teeth; 41\u201342 vertebrae; iii\u2013iv,7\u20139 anal-fin rays, among other features. The morphological analysis performed shows a clear distinction of the new species from congeners, and the greater genetic distance based on the gen COI between\u00a0<em>P<\/em>. <em>bermejo\u00a0<\/em>with\u00a0<em>P<\/em>. <em>tenebrosa<\/em>, provides additional support for the recognition of the new species herein described.<\/p>\n<p>Aguilera, G., Ter\u00e1n, G.E., Cort\u00e9s Hern\u00e1ndez, M.\u00c1., Katz, A.M., Azevedo-Santos, V.M., Benitez, M. and Mirande, M. 2026. Hidden diversity in the Paran\u00e1 River basin: a new species of <em>Phenacorhamdia<\/em> (Siluriformes: Heptapteridae) from the Bermejo River, Argentina. <em>Neotropical Ichthyology<\/em> 24 (01): e250189.<\/p>\n<table class= 'bibliplug-authors'><tr><td><a href='https:\/\/lillo.org.ar\/uel\/author\/gaston-aguilera\/'><img alt='Gast\u00f3n Aguilera' src='http:\/\/lillo.org.ar\/uel\/wp-content\/uploads\/gaston-aguilera_avatar_1502218652-120x120.jpg' class='avatar avatar-120 photo' height='120' width='120' \/><\/a><\/td><td><strong><a href='https:\/\/lillo.org.ar\/uel\/author\/gaston-aguilera\/'>Gast\u00f3n Aguilera<\/strong><\/a><br\/>Investigador Adjunto\r<br\/>CONICET\r<br\/>Ictiolog\u00eda<\/td><tr><\/table>\n<table class= 'bibliplug-authors'><tr><td><a href='https:\/\/lillo.org.ar\/uel\/author\/marcos-mirande\/'><img alt='Juan Marcos Mirande' src='http:\/\/lillo.org.ar\/uel\/wp-content\/uploads\/juan-marcos-mirande_avatar_1502294074-120x120.jpg' class='avatar avatar-120 photo' height='120' width='120' \/><\/a><\/td><td><strong><a href='https:\/\/lillo.org.ar\/uel\/author\/marcos-mirande\/'>Juan Marcos Mirande<\/strong><\/a><br\/>Investigador Principal\r<br\/>CONICET\r<br\/>FML\r<br\/>Ictiolog\u00eda<\/td><tr><\/table>\n<table class= 'bibliplug-authors'><tr><td><a href='https:\/\/lillo.org.ar\/uel\/author\/guillermo-teran\/'><img alt='Guillermo Ter\u00e1n' src='http:\/\/lillo.org.ar\/uel\/wp-content\/uploads\/guillermo-teran_avatar_1502204093-120x120.jpg' class='avatar avatar-120 photo' height='120' width='120' \/><\/a><\/td><td><strong><a href='https:\/\/lillo.org.ar\/uel\/author\/guillermo-teran\/'>Guillermo Ter\u00e1n<\/strong><\/a><br\/>Investigador Adjunto\r<br\/>CONICET\r<br\/>FML\r<br\/>Ictiolog\u00eda\r<br\/><\/td><tr><\/table>\n","protected":false},"excerpt":{"rendered":"<p>Phenacorhamdia\u00a0comprises 15 species distributed across the major river basins of South America,with\u00a0P. tenebrosa\u00a0beingthe only species recorded in Argentina.\u00a0After the examination of specimens of\u00a0Phenacorhamdia\u00a0from the upper Bermejo River basin, Paran\u00e1 River basin, in northwestern Argentina, we conclude that they belong to a new species which is described herein. The new species is distinguished from the remaining [&hellip;]<\/p>\n","protected":false},"author":57,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/lillo.org.ar\/uel\/wp-json\/wp\/v2\/pages\/2523"}],"collection":[{"href":"https:\/\/lillo.org.ar\/uel\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/lillo.org.ar\/uel\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/lillo.org.ar\/uel\/wp-json\/wp\/v2\/users\/57"}],"replies":[{"embeddable":true,"href":"https:\/\/lillo.org.ar\/uel\/wp-json\/wp\/v2\/comments?post=2523"}],"version-history":[{"count":2,"href":"https:\/\/lillo.org.ar\/uel\/wp-json\/wp\/v2\/pages\/2523\/revisions"}],"predecessor-version":[{"id":2526,"href":"https:\/\/lillo.org.ar\/uel\/wp-json\/wp\/v2\/pages\/2523\/revisions\/2526"}],"wp:attachment":[{"href":"https:\/\/lillo.org.ar\/uel\/wp-json\/wp\/v2\/media?parent=2523"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}