FB-69744 http://www.fishbase.org/summary/SpeciesSummary.php?id=69744 Animalia Chordata Teleostei Cyprinodontiformes Aphaniidae Paraphanius Paraphanius alexandri (Akşiray, 1948) Fine-spined skate Fijngestekelde rog Raja microtrachys Osburn & Nichols, 1916 2022-06-29 2022-06-29 Compagno, L.J.V.0 Checklist of living elasmobranchs. p. 471-498. In W.C. Hamlett (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes. Johns Hopkins University Press, Maryland. (Ref. 35766) Bor, P.H.F.0 Nederlandse naamlijst van de recente haaien en roggen (Chondrichthyes: Elasmobranchii) van de wereld. World Wide Web electronic publication www.rajidae.tmfweb.nl, version (05/2002). (Ref. 43454) Knuckey, J.D.S. and D.A. Ebert0 A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: <i>Bathyraja Ishiyama</i>). Zootaxa 5142(1):1-89. (Ref. 126515) FB-GeneralDescr-69753 http://purl.org/dc/dcmitype/Text text/html Estelita Emily Capuli 2022-07-06 00:00:00 2024-08-19 00:00:00 Biology http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=69753 This species inhabits perhaps the deepest waters and prefer low temperature, high oxygen environments compared to its congeners. Little is known about the diet of this species, except noted to consume deep-water shrimps. Based on materials examined, size at maturity for males is at least 64-75 cm TL and 60-70 cm TL for females; with reported size at birth to be about 17 cm TL. Egg cases are small (7.9-8.1 cm TL), dark golden brown in colour, coarsely striated with irregular rasp-like denticles, making it rough to the touch. Horns at the corners with the anterior ones robust at base, but flatten towards tips and the tips curve dorsally and back towards the egg case (Ref. 126515). Knuckey, J.D.S. and D.A. Ebert 2022 A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: <i>Bathyraja Ishiyama</i>). Zootaxa 5142(1):1-89. (Ref. 126515) FB-DiagnosticDescr-69753 http://purl.org/dc/dcmitype/Text text/html Estelita Emily Capuli 2022-07-06 00:00:00 2022-07-06 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=69753 This moderate sized, rhomboidal skates (91.0 cm TL), with disc length (41.5-51.1% TL), head moderately long (18.3-21.2% TL), internarial distance large (7.3-8.7% TL) is distinguished by the following: claspers short and robust, tip rounded, with very large pseudosiphon and a long, slender pseudorhipidion nearly reaching the tip, V-shaped cleft, no projection; teeth in 23-30 rows on upper jaw and 11-22 rows on lower jaw; pectoral radials 61-74; pelvic fins 14; total vertebrae 130; its dorsal surface evenly covered in fine prickles; thorns on dorsal surface, males with alar thorns, but without malar thorns, middorsal, nuchal, and scapular thorns absent, tail thorns high in number (19-26); interdorsal thorns weak to obsolete (0-1). Colouration: dorsal uniformly brown, usually darker at the margins while ventral is white, brown pectorals and pelvic fins (Ref. 126515). Knuckey, J.D.S. and D.A. Ebert 2022 A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: <i>Bathyraja Ishiyama</i>). Zootaxa 5142(1):1-89. (Ref. 126515) FB-Distribution-69753 http://purl.org/dc/dcmitype/Text text/html Estelita Emily Capuli 2022-07-06 00:00:00 2025-11-05 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=69753 Northeastern Pacific: from British Columbia, south to the Gulf of California Knuckey, J.D.S. and D.A. Ebert 2022 A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: <i>Bathyraja Ishiyama</i>). Zootaxa 5142(1):1-89. (Ref. 126515) FB-Uses-69753 http://purl.org/dc/dcmitype/Text text/html Estelita Emily Capuli 2022-07-06 00:00:00 2024-08-19 00:00:00 Importance http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=69753 fisheries: of no interest FB-Size-69753 http://purl.org/dc/dcmitype/Text text/html Estelita Emily Capuli 2022-07-06 00:00:00 2024-08-19 00:00:00 Max. size http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=69753 75.0 cm TL (male/unsexed; (Ref. 126515)) Knuckey, J.D.S. and D.A. Ebert 2022 A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: <i>Bathyraja Ishiyama</i>). Zootaxa 5142(1):1-89. (Ref. 126515) 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-69753 http://purl.org/dc/dcmitype/Text text/html Estelita Emily Capuli 2022-07-06 00:00:00 2024-08-19 00:00:00 Environment http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=69753 bathydemersal; marine; depth range 1995 - 3000 m (Ref. 126515), usually 2000 - 3000 m (Ref. 126515) Knuckey, J.D.S. and D.A. Ebert 2022 A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: <i>Bathyraja Ishiyama</i>). Zootaxa 5142(1):1-89. (Ref. 126515) Knuckey, J.D.S. and D.A. Ebert 2022 A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: <i>Bathyraja Ishiyama</i>). Zootaxa 5142(1):1-89. (Ref. 126515)