FB-2040 http://www.fishbase.org/summary/SpeciesSummary.php?id=2040 Animalia Chordata Teleostei Cichliformes Cichlidae Oreochromis Oreochromis rukwaensis (Hilgendorf & Pappenheim, 1903) Lake Rukwa tilapia Rukwa tilapia Rukwantilapia Ngege Perege Sasala 魯夸湖口孵非鯽 鲁夸湖口孵非鲫 Sarotherodon rukwaensis (Hilgendorf & Pappenheim, 1903) Tilapia nilotica rukwaensis Hilgendorf & Pappenheim, 1903 Tilapia rukwaensis Hilgendorf & Pappenheim, 1903 1990-12-20 2024-01-22 Trewavas, E.0 Tilapiine fishes of the genera <i>Sarotherodon</i>, <i>Oreochromis</i> and <i>Danakilia</i>. British Mus. Nat. Hist., London, UK. 583 p. (Ref. 2) Eccles, D.H.0 FAO species identification sheets for fishery purposes. Field guide to the freshwater fishes of Tanzania. Prepared and published with the support of the United Nations Development Programme (project URT/87/016). FAO, Rome. 145 p. (Ref. 4967) Trewavas, E. and G.G. Teugels0 Oreochromis. p. 307-346. In J. Daget, J.-P. Gosse, G.G. Teugels and D.F.E. Thys van den Audenaerde (eds.) Checklist of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 4. (Ref. 5166) Anonymous0 Fish registrations within the museum database of the Vertebrate Section of the Royal Museum for Central Africa. MRAC, Tervuren, Belgium. (Ref. 12818) Seegers, L.0 The fishes of the Lake Rukwa drainage. Ann. Mus. R. Afr. Centr., Sci. Zool., 278:1-407. (Ref. 27292) Swedish Museum of Natural History0 Fish collection database of the Naturhistoriska riksmuseet (Swedish Museum of Natural History). Ichthyology Section, Department of Vertebrate Zoology, Swedish Museum of Natural History, Stockholm, Sweden. (Ref. 31402) Wu, H.L., K.-T. Shao and C.F. Lai (eds.)0 Latin-Chinese dictionary of fishes names. The Sueichan Press, Taiwan. 1028 p. (Ref. 31517) Anonymous0 Fish collection database of the Natural History Museum, London (formerly British Museum of Natural History (BMNH)). Natural History Museum, London (formerly British Museum of Natural History (BMNH)). (Ref. 31982) Varjo, M., L. Koli and H. Dahlström0 Kalannimiluettelo (versio 10/03). Suomen Biologian Seura Vanamo Ry. (Ref. 51086) Chinese Academy of Fishery Sciences0 Chinese aquatic germplasm resources database. http://zzzy.fishinfo.cn (Ref. 58108) FAO-FIES0 Aquatic Sciences and Fisheries Information System (ASFIS) species list. Retrieved from http://www.fao.org/fishery/collection/asfis/en, March 2010. (Ref. 83882) FAO-FIES0 Aquatic Sciences and Fisheries Information System (ASFIS) species list. Retrieved from http://www.fao.org/fishery/collection/asfis/en, March 2012. (Ref. 90062) FAO-FIES0 Aquatic Sciences and Fisheries Information System (ASFIS) species list. Retrieved from http://www.fao.org/fishery/collection/asfis/en, April 2014. (Ref. 95632) FAO-FIES0 Aquatic Sciences and Fisheries Information System (ASFIS) species list. Retrieved from http://www.fao.org/fishery/collection/asfis/en, [accessed 13/04/2015]. (Ref. 101110) Shechonge, A., B.P. Ngatunga, S.J. Bradbeer, J.J. Day, J.J. Freer, A.G.P. Ford, J. Kihedu, T. Richmond, S. Mzighani, A.M. Smith, E.A. Sweke, R. Tamatamah, A.M. Tyers, G.F. Turner and M.J. Genner0 Widespread colonisation of Tanzanian catchments by introduced <i>Oreochromis</i> tilapia fishes: the legacy from decades of deliberate introduction. Hydrobiologia (2018). (Ref. 118630) Genner, M.J., G.F. Turner and B.P. Ngatunga0 A guide to the tilapia fishes of Tanzania. Martin J. Genner, George F. Turner and Benjamin P. Ngatunga, August 2018. 29 p. (Ref. 118638) FB-pic-2040-13921 http://purl.org/dc/dcmitype/StillImage image/gif FAO 1997-03-21 1997-03-21 http://creativecommons.org/licenses/by-nc/3.0/ This work is licensed under a Creative Commons Attribution-Noncommercial 3.0 Unported License. Image can be freely copied and altered but may be used only for non-commercial purposes. Original author and source must be properly acknowledged WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2040 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Size http://www.fishbase.us/images/species/Orruk_u0.gif http://www.fishbase.us/images/thumbnails/gif/tn_Orruk_u0.gif FB-GeneralDescr-2040 http://purl.org/dc/dcmitype/Text text/html Crispina B. Binohlan 1990-12-20 00:00:00 2024-01-22 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=2040 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Threats This species is found both in large lakes and small rivers (Ref. 4967, 118638). A maternal mouthbrooder (Ref. 118638). Males construct territories in shallow water; where there was ample space they were similar in structure and grouping to those of Oreochromis variabilis, each territory consisting of a central raised mating platform in the middle of a large circular depression (Ref. 2). It is a major component of the fisheries catch in Lake Rukwa and the Mtera Dam (Ref. 118638). Strong aquaculture potential given broad habitat requirements (Ref. 118638). IUCN conservation status is stated as vulnerable D2, declining population trend (Ref. 118638). Trewavas, E. 1983 Tilapiine fishes of the genera <i>Sarotherodon</i>, <i>Oreochromis</i> and <i>Danakilia</i>. British Mus. Nat. Hist., London, UK. 583 p. (Ref. 2) FB-DiagnosticDescr-2040 http://purl.org/dc/dcmitype/Text text/html Crispina B. Binohlan 1991-02-01 00:00:00 2018-10-25 17:13:43 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2040 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Habitat Diagnosis: Typical tilapiine cichlid, relatively deep bodied, with rather a small head (Ref. 118638). Other distinguishing characters are: caudal fin free of scales except basally; vertebrae 30; scales in lateral line series 30-32; dorsal spines XV-XVII; soft rays usually 11-13; outer teeth bicuspid, in mature fishes occasionally with a few tricuspids; lower gill-rakers 20-22; interorbital region in adults 34.5-40.0% length of head (Ref. 2). Ripe males have a dark body and fins, almost black, with bright red/orange margins on the dorsal and caudal fins; vertical barring can be noticeable in freshly caught specimens; head region in ripe males has a bluish sheen; ripe males have yellow-orange tassels; females and subadult males plain silver/grey with 6-7 post-opercular vertical stripes and bluish snout present in freshly caught specimens (Ref. 118638).Description: The teeth are in 4-6 series in specimens over 100 mm standard length, 3-4 below this size; with slender shafts and broader, curved crowns; those of outermost row bicuspid except that three mature fishes have a few tricuspids among them; inner rows tricuspid (Ref. 2). Scales on cheek in 2 rows, rarely 2 or 3 scales of a third row present; 4 or 4.5 between origin of dorsal and lateral line (Ref. 2). Caudal fin very slightly emarginate in young, truncate in adults (Ref. 2).Colouration: Preserved adults are uniformly pale, without markings on the body; the vertical fins and the pelvics are either likewise pale or may be dusky between the rays; the young are also pale, but some show 6-8 grey vertical bands on the flanks and the soft dorsal may be marked with dark oblique bands or with clear ovals on a grey ground; in this pattern the tilapia-mark may be indicated by a darker grey, but most are without even this vestige of a tilapia-mark (Ref. 2). Trewavas, E. 1983 Tilapiine fishes of the genera <i>Sarotherodon</i>, <i>Oreochromis</i> and <i>Danakilia</i>. British Mus. Nat. Hist., London, UK. 583 p. (Ref. 2) FB-Morphology-2040 http://purl.org/dc/dcmitype/Text text/html Crispina B. Binohlan 1991-02-01 00:00:00 2018-10-25 17:13:43 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2040 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Distribution Dorsal spines (total): 15 - 17; Dorsal soft rays (total): 11 - 13; Analspines: 3; Analsoft rays: 10 - 11; Vertebrae: 30 Trewavas, E. 1983 Tilapiine fishes of the genera <i>Sarotherodon</i>, <i>Oreochromis</i> and <i>Danakilia</i>. British Mus. Nat. Hist., London, UK. 583 p. (Ref. 2) FB-Distribution-2040 http://purl.org/dc/dcmitype/Text text/html Crispina B. Binohlan 1990-12-20 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=2040 Africa: Lake Rukwa (Ref. 2, 118630) and upper Great Ruaha River in Tanzania (Ref. 118630). Shechonge, A., B.P. Ngatunga, S.J. Bradbeer, J.J. Day, J.J. Freer, A.G.P. Ford, J. Kihedu, T. Richmond, S. Mzighani, A.M. Smith, E.A. Sweke, R. Tamatamah, A.M. Tyers, G.F. Turner and M.J. Genner 2018 Widespread colonisation of Tanzanian catchments by introduced <i>Oreochromis</i> tilapia fishes: the legacy from decades of deliberate introduction. Hydrobiologia (2018). (Ref. 118630) FB-Uses-2040 http://purl.org/dc/dcmitype/Text text/html Crispina B. Binohlan 1990-12-20 00:00:00 2024-01-22 00:00:00 Importance http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=2040 fisheries: commercial Eccles, D.H. 1992 FAO species identification sheets for fishery purposes. Field guide to the freshwater fishes of Tanzania. Prepared and published with the support of the United Nations Development Programme (project URT/87/016). FAO, Rome. 145 p. (Ref. 4967) FB-LifeCycle-2040 http://purl.org/dc/dcmitype/Text text/html Crispina B. Binohlan 1990-12-20 00:00:00 2024-01-22 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org//Reproduction/FishReproSummary.php?ID=2040&StockCode=2237 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Threats A maternal mouthbrooder (Ref. 118638). Males construct territories in shallow water; where there was ample space they were similar in structure and grouping to those of Oreochromis variabilis, each territory consisting of a central raised mating platform in the middle of a large circular depression; males occupy these territories at sunrise, when water temperature was 12°C and they left for deeper water in the late afternoon when the temperature rose to 25°C (Ref. 2). It exhibits pseudo-spawning and then true spawning follows (Ref. 2). Trewavas, E. 1983 Tilapiine fishes of the genera <i>Sarotherodon</i>, <i>Oreochromis</i> and <i>Danakilia</i>. British Mus. Nat. Hist., London, UK. 583 p. (Ref. 2) FB-TrophicStrategy-2040 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2018-10-25 17:34:10 2018-10-25 17:34:10 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public rukwaensis http://rs.tdwg.org/ontology/voc/SPMInfoItems#Habitat This species is found both in large lakes and small rivers (Ref. 4967, 118638). Genner, M.J., G.F. Turner and B.P. Ngatunga 2018 A guide to the tilapia fishes of Tanzania. Martin J. Genner, George F. Turner and Benjamin P. Ngatunga, August 2018. 29 p. (Ref. 118638) FB-Size-2040 http://purl.org/dc/dcmitype/Text text/html Crispina B. Binohlan 1990-12-20 00:00:00 2024-01-22 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=2040 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Distribution 33.0 cm SL (male/unsexed; (Ref. 4967)) Eccles, D.H. 1992 FAO species identification sheets for fishery purposes. Field guide to the freshwater fishes of Tanzania. Prepared and published with the support of the United Nations Development Programme (project URT/87/016). FAO, Rome. 145 p. (Ref. 4967) 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-2040 http://purl.org/dc/dcmitype/Text text/html Crispina B. Binohlan 1990-12-20 00:00:00 2024-01-22 00:00:00 Environment http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=2040 benthopelagic; freshwater