FB-5222 http://www.fishbase.org/summary/SpeciesSummary.php?id=5222 Animalia Chordata Teleostei Osteoglossiformes Mormyridae Pollimyrus Pollimyrus isidori (Valenciennes, 1847) Ras el hagar Ras el hajar Rypoun Isidorův Elephant Fish Isidore pollikala Paksunuijakala Pippurinuijakala Aben Akonthok Kpete Lèblèkou Nanadenin Sehel Sial Siel Yalgenfo 伊氏矮長頜魚 伊氏矮长颌鱼 奥氏矮长颌鱼 奧氏矮長頜魚 紋首矮長頜魚 纹首矮长颌鱼 Marcusenius fasciaticeps Boulenger, 1920 Marcusenius gaillardi Pellegrin, 1909 Marcusenius isidori fasciaticeps Boulenger, 1920 Marcusenius isidori isidori (Valenciennes, 1846) Marcusenius isidori osborni Nichols & Griscom, 1917 Marcusenius osborni Nichols & Griscom, 1917 Marcusenius rudebeckii Svensson, 1933 Mormyrus isidori Valenciennes, 1847 Petrocephalus vanderbilti Fowler, 1936 Pollimyrus fasciaticeps (Boulenger, 1920) Pollimyrus isidori fasciaticeps (Boulenger, 1920) Pollimyrus isidori isidori (Valenciennes, 1847) Pollimyrus isidori osborni (Nichols & Griscom, 1917) Pollimyrus lhuysi (non Steindachner, 1870) Pollimyrus osborni (Nichols & Griscom, 1917) Pollimyrus osbornii (Nichols & Griscom, 1917) Polymyrus isidori (Valenciennes, 1847) 1992-03-17 2016-05-02 Teugels, G.G., C. Lévêque, D. Paugy and K. Traoré0 État des connaissances sur la faune ichtyologique des bassins côtiers de Côte d'Ivoire et de l'ouest du Ghana. Rev. Hydrobiol. Trop. 21(3):221-237. (Ref. 272) Nigrelli, R.F.0 Longevity of fishes in captivity, with special reference to those kept in the New York Aquarium. p. 212-230. In G.E.W. Wolstehnolmen and M. O'Connor (eds.) Ciba Foundation Colloquium on Ageing: the life span of animals. Vol. 5., Churchill, London. (Ref. 273) Blache, J.0 Les poissons du bassin du Tchad et du bassin adjacent du Mayo Kebbi. Étude systématique et biologique. Mém. O.R.S.T.O.M. 4(2):483 p. (Ref. 367) Bigorne, R.0 Mormyridae. p. 122-184. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux saumâtres d'Afrique de l'Ouest. tome 1. Faune Trop. 28. Musée Royal de l'Afrique Centrale, Tervuren, and ORSTOM, Paris. (Ref. 2915) Poll, M.0 Exploration du Parc National de l'Upemba - Mission G.F. De Witte en collaboration avec W. Adam, A. Janssens, L. 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(Ref. 137577) FB-GeneralDescr-5222 http://purl.org/dc/dcmitype/Text text/html Tess Cruz 1992-03-17 00:00:00 2016-05-02 00:00:00 Biology http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=5222 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Diseases Occupies floodplain pools in Sudd. Feeds on mud, vegetable debris and small invertebrates (Ref. 28714). Affinities: only to P. adspersus, morphologically similar; distinguished through scales on caudal peduncle, dorsal and anal fin rays and body coloration. Generates electric organ discharge (EOD) of short duration (0.08 ms) that seems to correlate with aggregative behavior of the species (Ref. 10460; 10601). During the breeding season, males build nests and while patrolling their territory sporadically emit EODs at a mean rate of 18 Hz. Participating females, on the other hand, discharge at a fairly regular rate (8-11 Hz) and this has been shown to play a role in sex recognition during courtship and spawning. Male and female EOD waveforms also differ in the amplitude ratio of the first and third phase (Ref. 10764). Also produce natural sounds ('grunts', 'moans', 'growl', etc.) at different phases of courtship, nesting and territorial defense (Ref. 10832). A fractional spawner; females able to spawn up to 26 times in the course of one reproductive cycle, laying about 125 eggs per spawning episode. Larval electric organ situated in the deep lateral musculature; that of adults in the caudal peduncle (Ref. 10605). Bigorne, R. 1990 Mormyridae. p. 122-184. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux saumâtres d'Afrique de l'Ouest. tome 1. Faune Trop. 28. Musée Royal de l'Afrique Centrale, Tervuren, and ORSTOM, Paris. (Ref. 2915) FB-DiagnosticDescr-5222 http://purl.org/dc/dcmitype/Text text/html Maria Lourdes D. Palomares 1992-06-26 00:00:00 2017-11-15 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=5222 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Habitat Body depth 2.8-4.2 x SL. Sokomo and Comoe forms longer with SL/Depth ratio 3-4. Head 3.8-5.0 x SL. Eye diameter 3.3-6.4 x head length. Dorsal origin slightly behind anal fin origin. Pectorals slightly shorter or equal to head length, 2-3 x longer than pelvic fins, its posterior end reaching past origin of pelvic fins. Caudal peduncle height 2.3-3.9 x of its length, 12.3-20.6 x SL. Middle reaches fish silvery in color with lots of small spots on sides and head, higher reaches fish darker with darker and fewer spots. Bigorne, R. 1990 Mormyridae. p. 122-184. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux saumâtres d'Afrique de l'Ouest. tome 1. Faune Trop. 28. Musée Royal de l'Afrique Centrale, Tervuren, and ORSTOM, Paris. (Ref. 2915) FB-Morphology-5222 http://purl.org/dc/dcmitype/Text text/html Maria Lourdes D. Palomares 1992-06-26 00:00:00 2017-11-15 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=5222 http://rs.tdwg.org/ontology/voc/SPMInfoItems#DiagnosticDescription Dorsal spines (total): 0; Dorsal soft rays (total): 17 - 22; Analspines: 0; Analsoft rays: 21 - 27 Bigorne, R. 1990 Mormyridae. p. 122-184. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux saumâtres d'Afrique de l'Ouest. tome 1. Faune Trop. 28. Musée Royal de l'Afrique Centrale, Tervuren, and ORSTOM, Paris. (Ref. 2915) FB-Distribution-5222 http://purl.org/dc/dcmitype/Text text/html Tess Cruz 1992-03-17 00:00:00 2025-11-05 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=5222 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Morphology Africa: Senegal (Ref. 2915), Gambia, middle Niger (Ref. 3203) including the Benue (Ref. 2915), Volta and Chad basins, coastal rivers of Côte d'Ivoire (Sassandra, Bandama, Mé) and the Nile (Ref. 3203). Subspecies Pollimyrus isidori fasciaticeps and Pollimyrus isidori osborni are restricted to the Congo river basin (Ref. 3203). Gosse, J.-P. 1984 Mormyridae. p. 63-122. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ORSTOM, Paris and MRAC, Tervuren. Vol. 1. (Ref. 3203) FB-Uses-5222 http://purl.org/dc/dcmitype/Text text/html Tess Cruz 1992-03-17 00:00:00 2016-05-02 00:00:00 Importance http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=5222 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Distribution fisheries: of no interest; aquarium: commercial Schliewen, U.K. 1992 Aquarium fish. Barron's Education Series, Incorporated. 159 p. (Ref. 30491) FB-Migration-5222 http://purl.org/dc/dcmitype/Text text/html Tess Cruz 1992-03-17 00:00:00 2016-05-02 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=5222 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Uses Potamodromous. Migrating within streams, migratory in rivers, e.g. Saliminus, Moxostoma, Labeo. Migrations should be cyclical and predictable and cover more than 100 km. Riede, K. 2004 Global register of migratory species - from global to regional scales. Final Report of the R&D-Projekt 808 05 081. Federal Agency for Nature Conservation, Bonn, Germany. 329 p. (Ref. 51243) FB-LifeCycle-5222 http://purl.org/dc/dcmitype/Text text/html Rainer Froese 1992-03-17 00:00:00 2016-05-02 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org//Reproduction/FishReproSummary.php?ID=5222&StockCode=5460 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Size 30-200 eggs are spawned evey 5-8 days. Male builds nest and tends eggs and larvae. Eggs hatch after 4 days and feed after 12 days. Kirschbaum, F. and C. Schugardt 1995 Vergleichende Daten zur Fortpflanzungsbiologie von zwei Nilhecht-Arten (Mormyridae). p. 81-90. In H. Greven and R. Riehl (eds.) Fortpflanzungsbiologie der Aquarienfische. Birgit Schmettkamp Verlag, Bornheim, Germany. (Ref. 26493) FB-TrophicStrategy-5222 http://purl.org/dc/dcmitype/Text text/html Drina Sta. Iglesia 2000-11-10 00:00:00 2001-06-25 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public isidori http://rs.tdwg.org/ontology/voc/SPMInfoItems#Threats Occupies floodplain pools in Sudd. Feeds on mud, vegetable debris and small invertebrates. Bigorne, R. 1990 Mormyridae. p. 122-184. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux saumâtres d'Afrique de l'Ouest. tome 1. Faune Trop. 28. Musée Royal de l'Afrique Centrale, Tervuren, and ORSTOM, Paris. (Ref. 2915) FB-Size-5222 http://purl.org/dc/dcmitype/Text text/html Tess Cruz 1992-03-17 00:00:00 2016-05-02 00:00:00 Max. size http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=5222 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Habitat 10.3 cm TL (male/unsexed; (Ref. 57961)); max. published weight: 7.0 g (Ref. 3799) Lalèyè, P.A. 2006 Length-weight and length-length relationships of fishes from the Ouémé River in Bénin (West Africa). J. Appl. Ichthyol. 22:330-333. (Ref. 57961) Ita, E.O. 1984 Kainji (Nigeria). p. 43-103. In J.M. Kapetsky and T. Petr (eds.) Status of African reservoir fisheries. CIFA Tech. Pap. 10:326 p. (Ref. 3799) 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-5222 http://purl.org/dc/dcmitype/Text text/html Tess Cruz 1992-03-17 00:00:00 2016-05-02 00:00:00 Environment http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=5222 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Morphology demersal; potamodromous (Ref. 51243); freshwater; pH range: 6.0 - 8.0; dH range: 5 - 19 Riede, K. 2004 Global register of migratory species - from global to regional scales. Final Report of the R&D-Projekt 808 05 081. Federal Agency for Nature Conservation, Bonn, Germany. 329 p. (Ref. 51243)