| Kingdom | Phylum | Class | Order | Family |
|---|---|---|---|---|
| ANIMALIA | CHORDATA | ACTINOPTERYGII | CHARACIFORMES | ALESTIDAE |
| Scientific Name: | Brycinus jacksonii | |||
| Species Authority: | (Boulenger, 1912) | |||
Common Name/s:
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| Synonym/s: |
Alestes jacksonii Boulenger, 1912
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| Taxonomic Notes: | Also reported as Alestes jacksonii Boulenger, 1912 (Seegers et al. 2004). | |||
| Red List Category & Criteria: | Endangered A2acde ver 3.1 |
| Year Published: | 2006 |
| Assessor/s: | Hanssens, M., Snoeks, J. & Twongo, T.K. |
| Reviewer/s: | Snoeks, J. (Freshwater Fish Red List Authority) & Darwall, W. (Freshwater Biodiversity Assessment Programme) |
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Justification: Population reduction of >50% due to shrinkage in extent of occurrence caused by competitive displacement and predation following the introduction and colonization of Nile Perch Lates niloticus in Lakes Victoria, Kyoga and Nabugabo. Elswhere, locally threatened by increasing water turbidity and eutrophication. |
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| Range Description: | Lake Victoria system and associated smaller lakes, including middle Akagera, Lake Nabugabo, Lake Katwe and Victoria Nile (Seegers et al. unpub.). Notable absence in Lake Kyoga. Reported from Lake Victoria as A. nurse by Copley (1941), a misidentification (Seegers et al. 2004). |
| Countries: |
Native:
Burundi; Congo, The Democratic Republic of the; Tanzania, United Republic of; Uganda
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| Range Map: | Click here to open the map viewer and explore range. |
| Population: | Suffered a significant decline in Lake Victoria after invasion of the Nile Perch. Now very rare being restricted to small populations in the gulfs and bays along the lakeshore. |
| Population Trend: |
Decreasing
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| Habitat and Ecology: | Found in shallow inshore areas of lakes and quiet parts of rivers. Feeds on small fishes and invertebrates including snails and chironomid pupae and plants. Breeding biology not well known. Max. size: 27 cm SL (after Froese and Pauly 2003) |
| Systems: | Freshwater |
| Major Threat(s): | Water turbidity and siltation as a consequence of erosion and farming extension on the watersheds. In Lake Victoria: Competitive displacement and predation by Nile perch. Illegal fishing practices such as undersized nets. |
| Conservation Actions: | Unknown. |
| Citation: | Hanssens, M., Snoeks, J. & Twongo, T.K. 2006. Brycinus jacksonii. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 23 May 2012. |
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