Marcusenius rheni (Fowler, 1936)
Behaviour:
unknown
Size:
208 mm TL
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Accueil » Mormyridae » Mormyridae » Mormyrinae » Marcusenius » Marcusenius victoriae - (Worthington, 1929)
Mormyridae
Marcusenius victoriae (Worthington, 1929)
EOL Text
Potamodromous. Migrating within streams, migratory in rivers, e.g. Saliminus, Moxostoma, Labeo. Migrations should be cyclical and predictable and cover more than 100 km.
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | Pascualita Sa-a, FishBase |
| Source | http://www.fishbase.org/summary/SpeciesSummary.php?id=10919 |
Occurs in shallow inshore waters over both sandy and rocky bottoms, appears seasonally over muddy bottoms adjacent to extensive papyrus swamps. Feeds on small organisms like Ostracoda, Hydracarina, and Diaptomus.
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | Drina Sta. Iglesia, FishBase |
| Source | No source database. |
Spinitectus Infestation 5 (Larvae sp.). Parasitic infestations (protozoa, worms, etc.)
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | Allan Palacio, FishBase |
| Source | http://www.fishbase.org/Diseases/diseasesList.cfm?ID=10919&StockCode=11243 |
Rhabdochona Disease. Parasitic infestations (protozoa, worms, etc.)
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | Allan Palacio, FishBase |
| Source | http://www.fishbase.org/Diseases/diseasesList.cfm?ID=10919&StockCode=11243 |
IUCN Red List Assessment:
Red List Category
EN
Endangered
Red List Criteria
A2bcde
Version
3.1
Year Assessed
2006
Assessor/s
Bayona, J.D.R., Twongo, T.K. & Kazembe, J.
Reviewer/s
Snoeks, J. (Freshwater Fish Red List Authority) & Darwall, W. (Freshwater Biodiversity Assessment Programme)
Contributor/s
A population decline of more than 50% has been recoded within the last 10 years due to the combined impacts of fisheries exploitation, loss of habitat, and reduction in habitat quality, and competition from introduced species (T.K. Twongo and J. Kazembe, pers. comm., East African Freshwater Biodiversity Assessment workshop, Dec. 2003).
| 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/60365 |
Population:
Population
Information on relative abundance is scanty. It has a large extent of occurrence but the population size in lakes has been reduced by competition from introduced fish species (Ogutu-Ohwayo 1990, Ogutu-Ohwayo 1995, Twongo, pers. comm.). It is common in fisheries catches in Akagera associated lakes.
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/60365 |
Threats:
Major Threats
Domestic pollution; illegal fishing methods; fisheries pressure; loss of wetland habitats due to agricultural expansion; and competitive displacement by introduced 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/60365 |
Endangered (EN) (A2bcde)
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | Pascualita Sa-a, FishBase |
| Source | http://www.fishbase.org/summary/SpeciesSummary.php?id=10919 |
Biology:
Occurs in shallow inshore waters over both sandy and rocky bottoms, appears seasonally over muddy bottoms adjacent to extensive papyrus swamps. Feeds on small organisms like Ostracoda, Hydracarina, and Diaptomus (Ref. 9606). Oviparous (Ref. 205). Migrates up the river to spawn (Ref. 10608).
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | Pascualita Sa-a, FishBase |
| Source | http://www.fishbase.org/summary/SpeciesSummary.php?id=10919 |
Conservation Actions:
Conservation Actions
No information available.
| 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/60365 |