FB-66272 http://www.fishbase.org/summary/SpeciesSummary.php?id=66272 Animalia Chordata Teleostei Cypriniformes Nemacheilidae Triplophysa Triplophysa macrocephala Yang, Wu & Yang, 2012 2011-09-06 2024-03-18 Birindelli, J.O., D.F. Fayal and W.B. Wosiacki0 Taxonomic revision of thorny catfish genus Hassar (Siluriformes: Doradidae). Neotrop. Ichthyol. 9(3):515-542. (Ref. 87857) Sabaj Pérez, M.H. and J.L.O. Birindelli0 Hassar shewellkeimi, a new species of thorny catfish (Siluriformes: Doradidae) from the upper Tapajós basin, Brazil. Proc. Acad. Nat. Sci. Philadelphia 162:133-156. (Ref. 93284) Giarrizzo, T., R.R. de Sena Oliveira, M.C. Andrade, A.P. Gonçalves, T.A.P. Barbosa, A.R. Martins, D.K. Marques, J.L.B. dos Santos, R. de P., da S. Frois, T.P.O. de Albuquerque, L.F.de A. Montag, M. Camargo and L.M. de Sousa0 Length-weight and length-length relationships for 135 fish species from the Xingu River (Amazon basin, Brazil). J. Appl. Ichthyol. 31:514-424. (Ref. 111518) Beolens, B., M. Grayson and M. Watkins0 Eponym dictionary of Fishes. Dunbeath, Caithness (Scotland, UK): Whittles Publishing Limited, 1300 p. (Ref. 128868) FB-GeneralDescr-66281 http://purl.org/dc/dcmitype/Text text/html Frédéric Busson 2011-09-26 18:26:38 2024-03-18 00:00:00 Biology http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=66281 Like its congeners, this species was usually collected in swift water over sand beaches at night. It has been considered that specimens of Hassar orestis(=Hassar gabiru) collected at the Volta Grande rapids have preference for benthic invertebrates and detritus (Ref. 87857). Birindelli, J.O., D.F. Fayal and W.B. Wosiacki 2011 Taxonomic revision of thorny catfish genus Hassar (Siluriformes: Doradidae). Neotrop. Ichthyol. 9(3):515-542. (Ref. 87857) FB-DiagnosticDescr-66281 http://purl.org/dc/dcmitype/Text text/html Frédéric Busson 2011-09-26 00:00:00 2011-09-26 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=66281 Hassar gabiru is distinguished from H. orestis and H. wilderi by having two weakly-branched diverticula restricted to each side of anterior chamber of gas bladder (rarely one extra pair on posterior chambers) (vs. gas bladder with many well-branched diverticula along margins of entire bladder); and gas bladder rounded posteriorly (vs. gas bladder triangular posteriorly, each posterior chamber extended posteriorly into a short terminal diverticulum sharing medial septum with its pair). Hassar gabiru is further distinguished from H. orestis by having 11th through 15th, modally 13th, midlateral scute as the anteriormost with median thorn (vs. 1st through 8th, modally 3rd), tip of upper caudal-fin lobe not darkened (vs. usually darkened), body depth at dorsal-fin origin 24.3-33.1%, mean 25.8% SL (vs. 16.8-22.2%, mean 21.1% L), body depth at anal-fin origin 15.9-20.7%, mean 17.3% SL (vs. 10.0-14.7%, mean 13.1% SL), and caudal peduncle depth 6.6-8.6%, mean 7.1% SL (vs. 4.3-6.4%, mean 5.5% SL). Hassar gabiru is distinguished from H. affinis by having the distal tip of the first branched dorsal-fin rays and membranes pale (vs. first branched dorsal-fin rays and membranes distally darkened); and lateral diverticula on the gas bladder fingerlike, weakly-branched in large specimens (vs. rounded, rarely branched in large specimens) (Ref. 87857). Birindelli, J.O., D.F. Fayal and W.B. Wosiacki 2011 Taxonomic revision of thorny catfish genus Hassar (Siluriformes: Doradidae). Neotrop. Ichthyol. 9(3):515-542. (Ref. 87857) FB-Distribution-66281 http://purl.org/dc/dcmitype/Text text/html Frédéric Busson 2011-09-26 19:29:19 2025-11-05 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=66281 South America: Brazil. Occurs in the middle to upper Xingu river basin, and is apparently endemic to the Xingu basin above the raids of Volta Grande, near Altamira. Birindelli, J.O., D.F. Fayal and W.B. Wosiacki 2011 Taxonomic revision of thorny catfish genus Hassar (Siluriformes: Doradidae). Neotrop. Ichthyol. 9(3):515-542. (Ref. 87857) FB-TrophicStrategy-66281 http://purl.org/dc/dcmitype/Text text/html Frédéric Busson 2011-09-26 19:38:21 2011-10-07 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ gabiru Like its congeners, this species was usually collected in swift water over sand beaches at night. It has been considered that specimens of Hassar orestis(=Hassar gabiru) collected at the Volta Grande rapids have preference for benthic invertebrates and detritus (Ref. 87857). Birindelli, J.O., D.F. Fayal and W.B. Wosiacki 2011 Taxonomic revision of thorny catfish genus Hassar (Siluriformes: Doradidae). Neotrop. Ichthyol. 9(3):515-542. (Ref. 87857) FB-Size-66281 http://purl.org/dc/dcmitype/Text text/html Frédéric Busson 2011-09-26 18:26:38 2024-03-18 00:00:00 Max. size http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=66281 28.5 cm TL (male/unsexed; (Ref. 111518)); max. published weight: 292 g (Ref. 111518) Giarrizzo, T., R.R. de Sena Oliveira, M.C. Andrade, A.P. Gonçalves, T.A.P. Barbosa, A.R. Martins, D.K. Marques, J.L.B. dos Santos, R. de P., da S. Frois, T.P.O. de Albuquerque, L.F.de A. Montag, M. Camargo and L.M. de Sousa 2015 Length-weight and length-length relationships for 135 fish species from the Xingu River (Amazon basin, Brazil). J. Appl. Ichthyol. 31:514-424. (Ref. 111518) Giarrizzo, T., R.R. de Sena Oliveira, M.C. Andrade, A.P. Gonçalves, T.A.P. Barbosa, A.R. Martins, D.K. Marques, J.L.B. dos Santos, R. de P., da S. Frois, T.P.O. de Albuquerque, L.F.de A. Montag, M. Camargo and L.M. de Sousa 2015 Length-weight and length-length relationships for 135 fish species from the Xingu River (Amazon basin, Brazil). J. Appl. Ichthyol. 31:514-424. (Ref. 111518) FB-Threats-2 http://purl.org/dc/dcmitype/Text text/html Belen Acosta 1990-10-18 00:00:00 2024-03-07 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=2 Least Concern (LC) , IUCN Grouper and Wrasse Specialist Group IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006. FB-Habitat-66281 http://purl.org/dc/dcmitype/Text text/html Frédéric Busson 2011-09-26 18:26:38 2024-03-18 00:00:00 Environment http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=66281 benthopelagic; freshwater