FB-68091 http://www.fishbase.org/summary/SpeciesSummary.php?id=68091 Animalia Chordata Teleostei Characiformes Alestidae Brachyalestes Brachyalestes epuluensis (Decru, Vreven, Sadio & Snoeks, 2016) Marcusenius deserti Kramer, van der Bank & Wink, 2016 Marcusenius multisquamatus (non Kramer & Wink, 2013) 2016-11-25 2024-08-08 Kramer, B. and M. Wink0 East-west differentiation in the Marcusenius macrolepidotus species complex in Southern Africa: the description of a new species for the lower Cunene River, Namibia (Teleostei: Mormyridae). J. Nat. Hist. 47(35-36):2327-2362. (Ref. 94473) Kramer, L.B., F.H. van der Bank and M. Wink0 Marcusenius desertus sp. nov. (Teleostei: Mormyridae), a mormyrid fish from the Namib desert. Afr. J. Aquat. Sci. 41(1):1-18. (Ref. 113652) Skelton, P.H.0 Name changes and additions to the southern African freshwater fish fauna. Afr. J. Aquat. Sci. 2016:1-7. (Ref. 114605) Skelton, P.H.0 Chapter 11. The freshwater fishes of Angola. p. 207-242. In B.J. Huntley, V. Russo, F. Lages and N. Ferrand (eds.) Biodiversity of Angola. Science & conservation: a modern synthesis. Springer Nature Switzerland AG, Cham, Switzerland. 549 p. (Ref. 120641) FB-GeneralDescr-68100 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2016-12-12 17:40:29 2024-03-06 00:00:00 Biology http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68100 The riverbed where this species is found, is sandy or rocky, occasionally with steep cliffs bordering the river (Ref. 113652). Kramer, L.B., F.H. van der Bank and M. Wink 2016 Marcusenius desertus sp. nov. (Teleostei: Mormyridae), a mormyrid fish from the Namib desert. Afr. J. Aquat. Sci. 41(1):1-18. (Ref. 113652) FB-DiagnosticDescr-68100 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2016-12-12 00:00:00 2017-11-15 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68100 Diagnosis: Marcusenius desertus can be distinguished from its congeners by a combination of the following characters: short snout length, 40.8-45.8% of head length; small eye diameter, 11.9-19.5% of head length; nares separation 12.7-17.6 times in head length; short preanal distance, 59.2-62.7% of standard length; short head length, 17.6-20.8% of standard length; and long anal fin, 23.7-27.4% of standard length (Ref. 113652).Description: Head with terminal mouth well in front of eye, mental lobe on lower jaw protruding beyond upper jaw; head and body dorso-laterally compressed (Ref. 113652). Dorsal fin situated about two thirds of standard length from snout, obliquely orientated, anteriorly higher and posteriorly lower, distal margin slightly crescentic with anterior two or three rays longer than posterior rays, number of rays 21-25: anal fin opposite dorsal fin with distinctly more anterior origin, obliquely orientated, anteriorly lower and posteriorly higher, anterior rays longer than posterior ones, especially in males where they also appear stronger and often darkened, distal margin crescentic, number of rays 26-32 (Ref. 113652). Scales cycloid with reticulate striae, scales extending anteriorly to operculum and pectoral fin; number of circumpeduncular scales 11-15 (Ref. 113652). Caudal peduncle relatively deep, subcylindrical entire length, 34.5-42.6% in its length (Ref. 113652). Electric organ discharge (EOD) biphasic with pre-potential so weak it is not always noticeable; significant sex difference in EOD, with male EODs usually of longer duration and weaker N-phase amplitude and P-phase amplitude than females (Ref. 113652).Colouration: Colour in life: brownish grey with many distinct dark-brown blotches, except on head and belly, sometimes purple hue depending on the angle of light incidence, pelvic fins light and transparent, pectorals darker (Ref. 113652). Colour in preservation: brown (Ref. 113652). Kramer, L.B., F.H. van der Bank and M. Wink 2016 Marcusenius desertus sp. nov. (Teleostei: Mormyridae), a mormyrid fish from the Namib desert. Afr. J. Aquat. Sci. 41(1):1-18. (Ref. 113652) FB-Morphology-68100 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2016-12-12 00:00:00 2017-11-15 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68100 Dorsal spines (total): 0; Dorsal soft rays (total): 21 - 25; Analspines: 0; Analsoft rays: 26 - 32 Kramer, L.B., F.H. van der Bank and M. Wink 2016 Marcusenius desertus sp. nov. (Teleostei: Mormyridae), a mormyrid fish from the Namib desert. Afr. J. Aquat. Sci. 41(1):1-18. (Ref. 113652) FB-Distribution-68100 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2016-12-12 17:45:49 2019-07-12 16:45:35 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68100 Africa: lower reaches of the Cunene River, close to the coast, in Angola and Namibia (Ref. 113652, 120641). Kramer, L.B., F.H. van der Bank and M. Wink 2016 Marcusenius desertus sp. nov. (Teleostei: Mormyridae), a mormyrid fish from the Namib desert. Afr. J. Aquat. Sci. 41(1):1-18. (Ref. 113652) FB-TrophicStrategy-68100 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2016-12-12 18:23:30 2016-12-12 18:23:30 http://creativecommons.org/licenses/by-nc/3.0/ desertus The riverbed where this species is found, is sandy or rocky, occasionally with steep cliffs bordering the river (Ref. 113652). Kramer, L.B., F.H. van der Bank and M. Wink 2016 Marcusenius desertus sp. nov. (Teleostei: Mormyridae), a mormyrid fish from the Namib desert. Afr. J. Aquat. Sci. 41(1):1-18. (Ref. 113652) FB-Size-68100 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2016-12-12 17:40:29 2024-03-06 00:00:00 Max. size http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68100 20.7 cm SL (male/unsexed; (Ref. 113652)) Kramer, L.B., F.H. van der Bank and M. Wink 2016 Marcusenius desertus sp. nov. (Teleostei: Mormyridae), a mormyrid fish from the Namib desert. Afr. J. Aquat. Sci. 41(1):1-18. (Ref. 113652) 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-68100 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2016-12-12 17:40:29 2024-03-06 00:00:00 Environment http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68100 benthopelagic; freshwater