Marcusenius abadii
Distribution:
Niger River, Benoué and Volta. See FishBase for localities and museum records.
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Mormyridae
Marcusenius abadii (Boulenger, 1901)
EOL Text
Dorsal fin origin at same level as anal fin origin; body depth 3.0-4.7x of SL; peduncle height 3.2-5.0x of its length.
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | Maria Lourdes D. Palomares, FishBase |
| Source | http://www.fishbase.org/summary/SpeciesSummary.php?id=5083 |
Habitat and Ecology:
Habitat and Ecology
This is a demersal species. Electrobiology - weakly discharging.
Systems
- Freshwater
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | International Union for Conservation of Nature and Natural Resources |
| Source | http://www.iucnredlist.org/apps/redlist/details/182416 |
Environment:
demersal; freshwater
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | Tess Cruz, FishBase |
| Source | http://www.fishbase.org/summary/SpeciesSummary.php?id=5083 |
IUCN Red List Assessment:
Red List Category
NT
Near Threatened
Red List Criteria
3.1
Year Assessed
2010
Assessor/s
Entsua-Mensah, M. & Laly, P.
Reviewer/s
Snoeks, J., Darwall, W. & Smith, K.
Contributor/s
The species is currently known from around seven or eight locations over a wide area (extent of occurrence is over 280,000 km2, and area of occupancy is over 2,000km2). However due to the threats to the habitat of the species in terms of pollution (oil exploration in Lower Niger), reduction of occurrence and occupancy area (deforestation in Volta basin), aquatic weeds etc. the fish can be classified as Near Threatened as it is close to meeting VU under criterion B2.
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | International Union for Conservation of Nature and Natural Resources |
| Source | http://www.iucnredlist.org/apps/redlist/details/182416 |
Population:
Population
No data available on population trends.
Population Trend
Decreasing
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | International Union for Conservation of Nature and Natural Resources |
| Source | http://www.iucnredlist.org/apps/redlist/details/182416 |
Threats:
Major Threats
Oil spills in the Lower Niger basin. In the northern basins deforestation and bad agricultural practices are the main threats. Resultant increases in sediment loads and leaching of agrochemicals may pose threats to the health of the fish. This is particularly relevant in the Black Volta. Another threat is pollution of the water bodies from inadequately treated human waste. In the Oti, one major threat is aquatic weed invasion, which alter the habitat of the fish and affect oxygen levels. In the White Volta, effluents from mining activities may also pose a threat to this fish species.
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | International Union for Conservation of Nature and Natural Resources |
| Source | http://www.iucnredlist.org/apps/redlist/details/182416 |
Near Threatened (NT)
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | Tess Cruz, FishBase |
| Source | http://www.fishbase.org/summary/SpeciesSummary.php?id=5083 |
Conservation Actions:
Conservation Actions
There is a conservation policy in place in Ghana (Inland fisheries policy; Wetlands Management Strategy). The restoration of habitat is needed.
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | International Union for Conservation of Nature and Natural Resources |
| Source | http://www.iucnredlist.org/apps/redlist/details/182416 |
Range Description:
This species is known only from the Niger, the Benue and the Volta.
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | International Union for Conservation of Nature and Natural Resources |
| Source | http://www.iucnredlist.org/apps/redlist/details/182416 |
Africa: lower Niger, the Bénoué and the Voltas. Also known from the upper Niger (Ref. 3203). Affinities: close to Marcusenius cyprinoides.
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | Tess Cruz, FishBase |
| Source | http://www.fishbase.org/summary/SpeciesSummary.php?id=5083 |