FB-68068 http://www.fishbase.org/summary/SpeciesSummary.php?id=68068 Animalia Chordata Teleostei Cyprinodontiformes Nothobranchiidae Scriptaphyosemion Scriptaphyosemion nigrifluvi (Romand, 1982) 2016-10-25 2024-03-06 van der Zee, J.R., R. Sonnenberg and J.J. Mbimbi Mayi Munene0 <i>Hypsopanchax stiassnyae</i>, a new poeciliid fish from the Lulua River (Democratic Republic of Congo) (Teleostei: Cyprinodontiformes). Ichthyol. Explor. Freshwat. 26(1):87-96. (Ref. 103403) Beolens, B., M. Grayson and M. Watkins0 Eponym dictionary of Fishes. Dunbeath, Caithness (Scotland, UK): Whittles Publishing Limited, 1300 p. (Ref. 128868) FB-GeneralDescr-68078 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2016-11-08 21:36:45 2024-03-06 00:00:00 Biology http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68078 Currently only found in Kambambe River, a 2-5 meter wide, fast flowing tributary of Lulua River, bottom with sand and pebbles, bordered by gallery forest; the water is brownish with total dissolved ion concentration of 3 ppm and pH 6.2 (Ref. 103403). van der Zee, J.R., R. Sonnenberg and J.J. Mbimbi Mayi Munene 2015 <i>Hypsopanchax stiassnyae</i>, a new poeciliid fish from the Lulua River (Democratic Republic of Congo) (Teleostei: Cyprinodontiformes). Ichthyol. Explor. Freshwat. 26(1):87-96. (Ref. 103403) FB-DiagnosticDescr-68078 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2016-11-08 00:00:00 2016-11-09 17:25:05 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68078 Diagnosis: Hypsopanchax stiassnyae is distinguished from deep-bodied Hylopanchax species by its diverging supra-orbital cephalic sensory system versus parallel in Hylopanchax; it is distinguished from deep-bodied Plataplochilus species by its open supra-orbital cephalic sensory system versus a tubular system with large pores; it is distinguished from Procatopus and the northern Hypsopanchax, H. catenatus, H. platysternus and H. zebra, and Platypanchax modestus by the supra-orbital cephalic sensory system lacking a zigzag structure (Ref. 103403). Hypsopanchax differs from Hylopanchax and Plataplochilus by the lack of branchiostegal appendages in males (Ref. 103403). Hypsopanchax stiassnyae differs from H. jubbi by the shorter snout, 3.3-3.7% of standard length vs. 4.5-5.7%, the shorter anterior part of the supra-orbital cephalic sensory system, 36.5% of length of supra-orbital sensory system vs. 53.2, the absence of well developed lobes bordering the grooves of the supra-orbital sensory system, and a lower number of circumpeduncular scales, 10 vs. 11-12; it is distinguished from H. jobaerti by a straight dorsal profile vs. a convex profile, with relatively longer neural spines 6-11 in H. jobaerti, a shorter dorsal and anal fin base in females, dorsal fin base 11.8-12.1% of standard length vs. 13.2-13.8, anal fin base 15.2-16.3% of standard length vs. 16.8-19.0, and in males unpaired fins completely dark grey vs. only the distal edge of unpaired fins with dark pigmentation; in addition, they can be distinguished by a less deep body, especially in females, males 27.9-32.5% of standard length vs. 31.5-39.3, females 27.7-29.1% of standard length vs. 30.0-32.9, and slightly lower number of anal-fin rays, males 15-16 vs. 16-18, females 15 vs. 16-18 (Ref. 103403).Description: A small Hypsopanchax species, laterally strongly compressed; dorsal profile straight, slightly concave at nape; greatest body depth between pelvic and anal fins; ventral profile convex from head to end of anal fin; snout rounded, mouth directed upwards; lower jaw longer than upper jaw; on both jaws an outer row of larger, slightly curved conical teeth, inner teeth row more irregular arranged with smaller teeth; no branchiostegal appendages in adult males (Ref. 103403). Four very small frontal or nasal neuromasts present, pre-orbital cephalic sensory canal with 4 pores; post-orbital canal with 2 pores; open groove of supra-orbital neuromast system split in two parts with large neuromasts and narrow lobes; pre-opercular neuromast system with 5 pores, some of them elongated; lobes of supra-temporal neuromast system prominent (Ref. 103403). Scales cycloid, body completely scaled except ventral head surface, one row of large scales underneath eye, frontal squamation of G-type, no scales on dorsal- and anal-fin bases, scales on mid longitudinal series 26-28 (Ref. 103403). Number of dorsal-fin rays 9-10, anal-fin rays 15-16; first dorsal-fin ray above anal-fin ray 7-8 (Ref. 103403).Colouration: No information on live colouration available (Ref. 103403). Preserved in ethanol: males with back brown and flanks light brown, a narrow whitish band just above pelvic fin widening above anal fin; all flank scales with dark margins, forming a reticulated pattern; snout dark brown to blackish; pectoral fin translucent with dark tip, pelvic fin dark grey to blackish, unpaired fins dark grey (Ref. 103403). Females as males, less black pigmentation on flanks, whitish band on ventral side broader, pectoral fin translucent without dark edge, all other fins grayish (Ref. 103403). van der Zee, J.R., R. Sonnenberg and J.J. Mbimbi Mayi Munene 2015 <i>Hypsopanchax stiassnyae</i>, a new poeciliid fish from the Lulua River (Democratic Republic of Congo) (Teleostei: Cyprinodontiformes). Ichthyol. Explor. Freshwat. 26(1):87-96. (Ref. 103403) FB-Morphology-68078 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2016-11-08 00:00:00 2016-11-09 17:25:05 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68078 Dorsal spines (total): 0; Dorsal soft rays (total): 9 - 10; Analspines: 0; Analsoft rays: 15 - 16 van der Zee, J.R., R. Sonnenberg and J.J. Mbimbi Mayi Munene 2015 <i>Hypsopanchax stiassnyae</i>, a new poeciliid fish from the Lulua River (Democratic Republic of Congo) (Teleostei: Cyprinodontiformes). Ichthyol. Explor. Freshwat. 26(1):87-96. (Ref. 103403) FB-Distribution-68078 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2016-11-08 21:43:29 2017-08-16 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68078 Africa: only known from the Kambambe River (Lulua River tributary, Kasai drainage, middle Congo River basin), in Democratic Republic of the Congo (Ref. 103403). van der Zee, J.R., R. Sonnenberg and J.J. Mbimbi Mayi Munene 2015 <i>Hypsopanchax stiassnyae</i>, a new poeciliid fish from the Lulua River (Democratic Republic of Congo) (Teleostei: Cyprinodontiformes). Ichthyol. Explor. Freshwat. 26(1):87-96. (Ref. 103403) FB-TrophicStrategy-68078 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2016-11-09 17:29:36 2016-11-09 17:29:36 http://creativecommons.org/licenses/by-nc/3.0/ stiassnyae Currently only found in Kambambe River, a 2-5 meter wide, fast flowing tributary of Lulua River, bottom with sand and pebbles, bordered by gallery forest; the water is brownish with total dissolved ion concentration of 3 ppm and pH 6.2 (Ref. 103403). van der Zee, J.R., R. Sonnenberg and J.J. Mbimbi Mayi Munene 2015 <i>Hypsopanchax stiassnyae</i>, a new poeciliid fish from the Lulua River (Democratic Republic of Congo) (Teleostei: Cyprinodontiformes). Ichthyol. Explor. Freshwat. 26(1):87-96. (Ref. 103403) FB-Size-68078 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2016-11-08 21:36:45 2024-03-06 00:00:00 Max. size http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68078 3.0 cm SL (male/unsexed; (Ref. 103403)) van der Zee, J.R., R. Sonnenberg and J.J. Mbimbi Mayi Munene 2015 <i>Hypsopanchax stiassnyae</i>, a new poeciliid fish from the Lulua River (Democratic Republic of Congo) (Teleostei: Cyprinodontiformes). Ichthyol. Explor. Freshwat. 26(1):87-96. (Ref. 103403) 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-68078 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2016-11-08 21:36:45 2024-03-06 00:00:00 Environment http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68078 benthopelagic; freshwater; pH range: 6.2 - 6.2