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Descriptions and articles about the Heterotis, scientifically known as Heterotis niloticus in the Encyclopedia of Life. Includes Overview; Comprehensive Desc. Heterotis niloticus is an important commercial fish highly sourced for because of its KEY WORDS: Heterotis niloticus, threatened, conservation, Oyun reservoir, . Heterotis niloticus (Cuvier, ). Dataset; GBIF Backbone Taxonomy: Rank; SPECIES.

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IUCN Red List of Threatened Species

This species is widespread throughout Africawhere it is native to all nilotiicus watersheds in Sahelo-Sudanese region, Senegaland Gambia as well as parts of eastern Africa. African arowana; bony tongue; heterotis Local Common Names Benin: Taxonomic Tree Top of page Domain: Fish and Fisheries, 2: One or more of the features that are needed to show you the maps functionality are not available in the web browser that you are using.

The African arowana is a hfterotis fish with large scales, long dorsal and anal fins set far back on the body, and a rounded caudal fin. Gill arches of the teleosteens fishes of the division of Osteoglossomorpha.

Ecologie de Heterotis niloticus Osteoglossiformes: Reizer reported an age at maturity of 20 months for H. Patterns of ni,oticus diversification in North American fishes: GSI peaked during the wet season May to Augustthen declined progressively throughout the flood period until the beginning of the dry season in November to December.

Longevity Possibly between 5 and 10 years Moreau, Food and Agriculture Organization, United Nations. More research is required to evaluate the impact of H. A success by the forestry service in Cameroon: Fecundity increased with body length and body weight. Please consider upgrading your browser to the latest version or installing a new browser.


However, it is also possible that its presence in this river may result from a natural introduction from adjacent water bodies. Froese and Pauly say that several countries report adverse ecological impacts after introduction, but these ecological impacts were not specified. Colour is uniformly greyish or bronze; lips yellowish and eye more or heterotls golden. Migration from source population lakes during flooding favours the dispersal of Heterotis in related water bodies and therefore will increase the risk of introduction Adite et al.

These numbers increase with the size of the fish. Journal of Environmental Protection, 2: In fish farming in Ghana, the parasite Lernea has been found Micha, The size at first maturity for H.

beterotis In many African rivers and lakes, H. For example hterotis Benin, according to Froese and PaulyH. It’s not feral or aggressive like its relatives.

Uses Top of page H. Habitat Top of page H. Description Top of page Body rather elongate, its depth from 3. Compared to these, the African arowana has a more terminal mouth and is the only one that feeds extensively on plankton. The hardiness of this fish, together with its high growth rate, make it a candidate for aquaculture in Africa and it has been transported to a number of countries for this purpose Welcomme, Fresh water fish diversity in Benin, West Africa, and challenge for its conservation.

The reproductive cycle of Mormyrus kannume Forsk. It is generally accepted that the nilotjcus introductions were made in the early s Moreau, Despite being called an “arowana”, the African arowana is heterotid closely related to arapaimasthe only other members in the Arapaimidae family, [2] than the South American, Asian and Australian arowanas in the Osteoglossidae family Arapaimidae is sometimes included in Osteoglossidae.


Gbaguidi AS; Pfeiffer V, Federal College of Freshwater Fisheries Technology, pp.

Froese and Pauly, The number of oocytes per gram of ovary was not influenced by body size. This page was last edited on 30 Augustat Don’t need the entire report? Fisheries ecology of floodplain rivers.

Cuvier, Heterotis adansonii G. A suprabranchial organ allows it to concentrate small planktonic food particles and also has a sensory function. Original or natural distribution includes all water-basins of the Nilo-Sudanese region: Its height is 3. This species is native to many parts of Africa, and has Fish and fisheries of northern Nigeria.

Motwani, inland fishery biologist. According to some authors Daget, ; Blache et al. Guide to the fishes of the River Nile in the Republic of the Sudan. The different food habits of Heterotis in different habitats suggest a degree of trophic plasticity of this species.

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Bois et Forets des Tropiques, No. Tending of nests and broods occurs from the time of hatching until juveniles disperse from the nest.

Moreau J; Moreau I,