Kingdom | Phylum | Class | Order | Family |
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Animalia | Chordata | Actinopterygii | Osteoglossiformes | Mormyridae |
Scientific Name: | Hippopotamyrus grahami (Norman, 1928) | |||
Common Name(s):
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Synonym(s): |
Marcusenius grahami Norman, 1928
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Taxonomic Notes: | Also reported as Marcusenius grahami (antiquated binomen) (Seegers et al. 2003). |
Red List Category & Criteria: | Least Concern ver 3.1 |
Year Published: | 2016 |
Date Assessed: | 2015-12-16 |
Assessor(s): | FishBase team RMCA & Geelhand, D. |
Reviewer(s): | Kishe, M., Natugonza, V., Nyingi, D. & Snoeks, J. |
Contributor(s): | Musschoot, T., Boden, G., Ntakimazi, G., Twongo, T.K. & Hanssens, M. |
Facilitator/Compiler(s): | Darwall, W.R.T. |
Justification: Hippopotamyrus grahami is known from the Lake Victoria basin, the Victoria Nile, Lake Kyoga and the Middle Akagera system. No major, widespread threats have been identified. This species is therefore listed as Least Concern. |
Range Description: | This species is known from Lake Victoria and its affluent rivers (Greenwood 1966) such as the Akagera, the Nzoia (Corbet 1961) and the Sio (Okedi 1969) Rivers. Hippopotamyrus grahami also occurs in the Middle Akagera system in Rwanda (De Vos et al. 2001), in Lake Kyoga and associated rivers (Worthington 1929), and in the Victoria Nile system (Corbet 1961). |
Countries occurrence: | Native: Kenya; Rwanda; Tanzania, United Republic of; Uganda |
Additional data: | |
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Range Map: | Click here to open the map viewer and explore range. |
Population: | The population size and trend are not known, but it was previously reported as fairly common in Lake Victoria (Greenwood 1966) and Lake Kyoga (Worthington 1929) systems. |
Current Population Trend: | ![]() |
Additional data: |
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Habitat and Ecology: | In Lake Victoria, H. grahami occurs in shallow, coastal waters particularly where the bottom is sandy (Greenwood 1966). In Lake Kyoga, it frequents areas overgrown by water lilies (Worthington 1929). Graham's Stonebasher feeds on a wide range of prey, mainly chironomid larvae, but also Trichoptera and Gastropoda (Corbet 1961). Males grow to a larger size than females, and it breeds twice a year during the rainy seasons (Okedi 1969), and migrates up rivers to spawn (Whitehead 1959, Okedi 1969). The maximum size is 25.0 cm SL (Eccles 1992). |
Systems: | Freshwater |
Movement patterns: | Full Migrant |
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Use and Trade: | Part of the artisanal fishery except in Uganda where it is not eaten. |
Major Threat(s): | No threats are known for this species specifically. Water turbidity and siltation as a consequence of erosion and farming expansion, regression of wetlands and swamps due to expansion of agriculture and human settlements, irrigation, eutrophication, loss of riverine migratory routes are potential threats. |
Conservation Actions: | No conservation actions are known for this species. |
Citation: | FishBase team RMCA & Geelhand, D. 2016. Hippopotamyrus grahami. The IUCN Red List of Threatened Species 2016: e.T60357A47184805. . Downloaded on 19 April 2018. |
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