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FishBase Names Scientific source: Integrated Taxonomic Information System Supported by National Biological Information Infrastructure National Science Foundation go to Discover Life's Facebook group Following modified from FishBase    Top | See original http://www.fishbase.org/Summary/speciesSummary.php?genusname=Xenomystus&speciesname=nigri ---> http://52.67.158.155/Summary/speciesSummary.php?genusname=Xenomystus&speciesname=nigri http://52.67.158.155/Summary/speciesSummary.php?genusname=Xenomystus&speciesname=nigri ---> https://fishbase.net.br/Summary/speciesSummary.php?genusname=Xenomystus&speciesname=nigri https://fishbase.net.br/Summary/speciesSummary.php?genusname=Xenomystus&speciesname=nigri ---> https://fishbase.net.br/summary/Xenomystus-nigri.html You can sponsor this page Common name (e.g. trout) contains begins with begins with ends with is Genus + Species (e.g. Gadus morhua) About this page More Info Plus d'info Mais info Languages Arabic Bahasa/Malay Bangla Chinese(Si) Chinese(Tr) Deutsch English Español Farsi Français Greek Hindi Italiano Japanese Lao Nederlands Português(Br) Português(Pt) Russian Swedish Thai Vietnamese User feedbacks Comments &   Corrections Fish Forum Guest Book Facebook Citation Uploads Attach website Upload photo Upload video Upload   references Fish Watcher Related species Species in    Xenomystus Species in    Notopteridae - Classification - Xenomystinae Notopteridae Osteoglossiformes Teleostei Chordata Animalia Xenomystus nigri ( Günther , 1868 ) African knifefish Upload your photos  and  videos Pictures | Google image Xenomystus nigri Picture by Kaladjian, M. Classification / Names Common names | Synonyms | Catalog of Fishes( genus , species ) | ITIS | CoL | WoRMS | Cloffa Teleostei (teleosts) > Osteoglossiformes (Bony tongues) > Notopteridae (Featherbacks or knifefishes) > Xenomystinae Etymology: Xenomystus: Greek, xenos = strange + Greek, mystax = whiskered, used by Belon in 1553 to describe all fishes with whiskers (Ref. 45335 ) . More on author: Günther . Environment: milieu / climate zone / depth range / distribution range Ecology Freshwater; demersal; pH range: 6.0 - 8.0; dH range: 5 - 19. Tropical; 22°C - 28°C (Ref. 1672 ) Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri Africa: widely distributed in tropical Africa, in the Nile, Chad, Niger, Ogowe and Congo basins (Ref. 7431 ). Also present in coastal rivers in Sierra Leone, Liberia, Togo, Benin and Cameroon, but not found in Côte d'Ivoire nor Ghana (Ref. 7431 ). Size / Weight / Age Maturity: L m   ?   range ? - ? cm Max length : 30.0 cm SL male/unsexed; (Ref. 31256 ) Short description Morphology | Morphometrics Dorsal spines (total): 0; Anal spines : 0; Anal soft rays : 108 - 130. Body height 5-5.4 x SL, head length 6.9-7.5 x SL, snout smaller than eye, eye diameter 3.8-4.5 x head length, maxilla extends to vertical of eye center or just under the eye's posterior border, ventral spines 25-32 Biology     Glossary (e.g. epibenthic) Obligate air-breathing (Ref. 126274 ); Prefers quiet waters with vegetation. Females lay 150-200 eggs of 2 mm diameter (Ref. 1672 ). Can produce barking sounds. Comes to the surface from time to time to swallow air. Feeds at dusk and during the night on worms, crustaceans, insects and snails (Ref. 7020 ). Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae Main reference Upload your references | References | Coordinator | Collaborators Roberts, T.R. , 1992. Systematic revision of the old world freshwater fish family Notopteridae. Ichthyol. Explor. Freshwat. 2(4):361-383. (Ref. 7431 ) IUCN Red List Status (Ref. 130435 )   Least Concern (LC)  ; Date assessed: 05 June 2019 CITES Not Evaluated CMS (Ref. 116361 ) Not Evaluated Threat to humans   Harmless Human uses Fisheries: of no interest; aquarium: commercial FAO - Publication: search | FishSource | More information Countries FAO areas Ecosystems Occurrences Introductions Stocks Ecology Diet Food items Food consumption Ration Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Spawning aggregation Fecundity Eggs Egg development Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment Abundance BRUVS References Aquaculture Aquaculture profile Strains Genetics Electrophoreses Heritability Diseases Processing Nutrients Mass conversion Collaborators Pictures Stamps, Coins Misc. Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision Tools Bio-Quiz | E-book | Field guide | Identification keys | Length-frequency wizard | Life-history tool | Point map | Classification Tree | Catch-MSY | Special reports Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets Download XML Summary page | Point data | Common names | Photos Internet sources AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes : genus , species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome , nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | Public aquariums | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go , Search | World Records Freshwater Fishing | Zoological Record Estimates based on models Phylogenetic diversity index (Ref. 82804 ):  PD 50 = 1.0010   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.00832 (0.00318 - 0.02175), b=2.99 (2.77 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245 ). Trophic level (Ref. 69278 ):  3.3   ±0.44 se; based on food items. Resilience (Ref. 120179 ):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.). Fishing Vulnerability (Ref. 59153 ):  Low to moderate vulnerability (27 of 100). Comments & Corrections Back to Search Random Species Back to Top Accessed through: Not available FishBase mirror site : Laguna, Philippines Page last modified by : mrius-barile Updated: 2024-04-25 09:19:18 gmt FishBase | Search | All Living Things | Top © Designed by The Polistes Corporation