FB-68182 http://www.fishbase.org/summary/SpeciesSummary.php?id=68182 Animalia Chordata Teleostei Characiformes Serrasalmidae Myloplus Myloplus lucienae Andrade, Ota, Bastos & Jégu, 2016 Yelele Xenocharax spilurus (non Günther, 1867) 2017-04-04 2017-04-05 Boulenger, G.A.0 Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History). Volume IV. London. 392 p. (Ref. 1880) Gosse, J.P.0 Le milieu aquatique et l'écologie des poissons dans la région de Yangambi. Ann. Mus. R. Afr. Centr., Sér. in-8°, Sci. Zool., 116:113-270. (Ref. 4910) Matthes, H.0 Les poissons du lac Tumba et de la région d'Ikela. Étude systématique et écologique. Ann. Mus. R. Afr. Centr., série in-8°, Sci. Zool. 126:204 p. (Ref. 41580) Poll, M.0 Recherches sur la faune ichthyologique de la région du Stanley-Pool. Ann. Mus. R. Congo Belge, Sér. In-8°, Sci. Zool., 71:75-174. (Ref. 41585) David, L. and M. Poll0 Contribution à la faune ichthyologique du Congo Belge: collections du Dr. H. Schouteden (1924-1926) et d'autres récolteurs. Ann. Mus. Congo Belge, Zool. (1), 3(5):189-294. (Ref. 41590) Daget, J. and A. Stauch0 Poissons de la rive droite du Moyen-Congo. Mission A. Stauch (février-avril 1961). Bull. Inst. Rech. Sci. Congo 2:41-48. (Ref. 44840) Gosse, J.-P.0 Les poissons du bassin de l'Ubangi. Mus. R. Afr. Centr., Doc. Zool., 13:56 p. (Ref. 45441) Boulenger, G.A.0 Liste des poissons représentés dans une nouvelle collection de la rivière Sankuru (Kasaï) reçue de M.E. Luja. Bull. Soc. Nat. Luxemb. 21:218-225. (Ref. 45626) Daget, J.0 Contribution à la faune de la République Unie du Cameroun. Poissons du Dja, du Boumba et du Ngoko. Cybium 3(3):35-52. (Ref. 46233) Pellegrin, J.0 Poissons nouveaux du Congo français. Bull. Mus. Natn. Hist. Nat., Paris, 6(3):98-101. (Ref. 52343) Monsembula Iyaba, R.J.C. and M.L.J. Stiassny0 Fishes of the Salonga National Park (Congo basin, central Africa): a list of species collected in the Luilaka, Salonga, and Yenge Rivers (Equateur Province, Democratic Republic of Congo). Check List 9(2):246-256. (Ref. 93897) Pellegrin, J.0 Catalogue des characinidés africains des collections du Muséum d'Histoire Naturelle de Paris. Bull. Mus. Natn. Hist. Nat., Paris, 12(7):474-480. (Ref. 98593) Decru, E.0 The ichthyofauna in the Central Congo basin: diversity and distribution in the north-eastern tributaries. KULeuven, Faculty of Science, Leuven (Belgium), 303p. (Ref. 106290) Arroyave, J., J.S.S. Denton and M.L.J. Stiassny0 Are characiform fishes Gondwanan in origin? Insights from a time-scaled molecular phylogeny of the Citharinoidei (Ostariophysi: Characiformes). PLoS ONE 8(10):e77269. (Ref. 114877) Ibala Zamba, A., V. Mamonekene, E. Vreven and M.L.J. Stiassny0 Rehabilitation of <i>Xenocharax crassus</i> (Teleostei: Distichodontidae), a species endemic to the Congo basin in central Africa. Ichthyol. Explor. Freshwat. 27(4):347-354. (Ref. 114931) Zamba, A.I., E. Vreven, V. Mamonekene, T. Musschoot, H.F.P. Ngot and J. Snoeks0 Length-weight relationships of 37 freshwater fish species from the Lefini river, middle Congo River basin (Republic of the Congo). J. Appl. Ichthyol. 36:352-357. (Ref. 124477) FB-GeneralDescr-68191 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2017-04-12 19:39:44 2024-03-04 00:00:00 Biology http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68191 Found almost exclusively in forested tributaries or in savannah streams under dense gallery forest (Ref. 114931). Pellegrin, J. 1900 Poissons nouveaux du Congo français. Bull. Mus. Natn. Hist. Nat., Paris, 6(3):98-101. (Ref. 52343) FB-DiagnosticDescr-68191 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2017-04-12 00:00:00 2017-04-25 18:09:26 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68191 Diagnosis: Xenocharax crassus is distinguished from Xenocharax spilurus by the presence of a large black mark located anteriorly on the dorsal fin, vs. absence; a small, round, black spot at the posterior half of the caudal peduncle and covering a total of 4 to 6 scales, ±2 to 3 scales in horizontal and vertical direction alike, vs. a large ovoid spot covering a total of about 35 to 46 scales, ±8 to 10 scales in horizontal and vertical direction alike; and a wider mouth, 29-34% of head length vs. 24-29% (Ref. 114931). In addition, for the specimens of similar sizes, X. crassus has a shorter dorsal-adipose distance than X. spilurus; further, most X. crassus specimens have 6 supraneurals vs. 7 in X. spilurus (Ref. 52343, 114931).Description: A large, robust species; body laterally compressed, relatively high, head length 28.0-33.2% of standard length, proportionally longer in smaller specimens; interorbital width broad, but overlapping range of X. spilurus; mouth terminal and wide; premaxillae with two rows of short, stout, bicuspid teeth, 32-38 in outer row; maxillae, each with 5-9 bicuspid teeth along anterodorsal margins and lower jaw with three rows of bicuspid teeth, 31-37 in outer row (Ref. 52343, 114931). Dorsal-fin origin in advance of vertical through pelvic-fin insertion; pelvic-fin origin below anterior half of dorsal-fin base approximately at level of 5th to 8th fin ray; adipose scaled basally (Ref. 114931). Scales: 74 lateral line scales, 26 transversal scales (Ref. 52343).Colouration: In life, body generally greyish, darker dorsally over dorsal midline from head to caudal peduncle; flanks with 11-14 faint vertical bars extending from upper to lowerflanks only slightly below lateral line; in addition, flanks of some specimens variously spotted with darkly pigmented scales randomly arrayed over lower flanks below lateral line; small, round, black spot on posterior half of caudal peduncle at level of lateral line and covering a total of 4 to 6 scales, ± 2 to 3 scales in horizontal and vertical direction alike; dorsal fin dark with a large black mark anteriorly, extending over basal quarter to half of fin; pectoral and pelvic fins translucent yellowish; anal and caudal fins dark yellowish (Ref. 114931). In preservation, head and body dark brown dorsally, becoming pale yellow ventrally; opercle with large blackish blotch covering ventral region; vertical black bands clearly visible on flanks; ventral surface of head and body light yellowish-white; small, round, black spot visible at base of caudal peduncle; dorsal fin yellowish with dark patch anteriorly; pectoral, pelvic, anal and caudal fins yellowish-white to transparent with faint brownish pigmentation along or in-between rays (Ref. 114931). Ibala Zamba, A., V. Mamonekene, E. Vreven and M.L.J. Stiassny 2016 Rehabilitation of <i>Xenocharax crassus</i> (Teleostei: Distichodontidae), a species endemic to the Congo basin in central Africa. Ichthyol. Explor. Freshwat. 27(4):347-354. (Ref. 114931) FB-Morphology-68191 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2017-04-12 00:00:00 2017-04-25 18:09:26 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68191 Dorsal spines (total): 0; Dorsal soft rays (total): 18 - 22; Analspines: 0; Analsoft rays: 13 - 15 Ibala Zamba, A., V. Mamonekene, E. Vreven and M.L.J. Stiassny 2016 Rehabilitation of <i>Xenocharax crassus</i> (Teleostei: Distichodontidae), a species endemic to the Congo basin in central Africa. Ichthyol. Explor. Freshwat. 27(4):347-354. (Ref. 114931) FB-Distribution-68191 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2017-04-12 19:43:34 2025-11-05 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68191 Africa: middle Congo River basin in Congo Republic (Ref. 52343, 114931), Democratic Republic of the Congo (Ref. 93897, 114931) and Cameroon (Ref. 114931). Ibala Zamba, A., V. Mamonekene, E. Vreven and M.L.J. Stiassny 2016 Rehabilitation of <i>Xenocharax crassus</i> (Teleostei: Distichodontidae), a species endemic to the Congo basin in central Africa. Ichthyol. Explor. Freshwat. 27(4):347-354. (Ref. 114931) FB-TrophicStrategy-68191 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2017-04-25 19:16:55 2017-04-25 19:16:55 http://creativecommons.org/licenses/by-nc/3.0/ crassus Found almost exclusively in forested tributaries or in savannah streams under dense gallery forest (Ref. 114931). Ibala Zamba, A., V. Mamonekene, E. Vreven and M.L.J. Stiassny 2016 Rehabilitation of <i>Xenocharax crassus</i> (Teleostei: Distichodontidae), a species endemic to the Congo basin in central Africa. Ichthyol. Explor. Freshwat. 27(4):347-354. (Ref. 114931) FB-Size-68191 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2017-04-12 19:39:44 2024-03-04 00:00:00 Max. size http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68191 18.6 cm SL (male/unsexed; (Ref. 124477)) Zamba, A.I., E. Vreven, V. Mamonekene, T. Musschoot, H.F.P. Ngot and J. Snoeks 2020 Length-weight relationships of 37 freshwater fish species from the Lefini river, middle Congo River basin (Republic of the Congo). J. Appl. Ichthyol. 36:352-357. (Ref. 124477) 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-68191 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2017-04-12 19:39:44 2024-03-04 00:00:00 Environment http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68191 benthopelagic; freshwater