Map_thumbnail_large_font

Oreochromis rukwaensis

Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_onStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_off

Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA ACTINOPTERYGII PERCIFORMES CICHLIDAE

Scientific Name: Oreochromis rukwaensis
Species Authority: (Hilgendorf & Pappenheim, 1903)
Common Name(s):
English Lake Rukwa Tilapia

Assessment Information [top]

Red List Category & Criteria: Vulnerable D2 ver 3.1
Year Published: 2006
Date Assessed: 2006-01-31
Assessor(s): Bayona, J.D.R. & Hanssens, M.
Reviewer(s): Snoeks, J. (Freshwater Fish Red List Authority) & Darwall, W. (Freshwater Biodiversity Assessment Programme)
Justification:
Restricted to the Lake Rukwa drainage.

Geographic Range [top]

Range Description: Endemic to the Lake Rukwa catchment
Countries:
Native:
Tanzania, United Republic of
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The species is commercially exploited and composed 34.17% of the total annual catch in 1977 (Bernascek 1980) rising to 70% in 1996 (Fish. Div. 1996). Catch per vessel as a measure of relative abundance declined slightly: 3.7 tons per vessel was landed in 1997 compared to 3.2 tons per vessel in 1996. The decline is only 13.5%.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: Found in both lakes and rivers.
Systems: Freshwater

Threats [top]

Major Threat(s): Over-fishing: exploitation by small meshed nets (illegal fishing gears). Siltation and land based pollution.

Conservation Actions [top]

Conservation Actions: No information available.

Citation: Bayona, J.D.R. & Hanssens, M. 2006. Oreochromis rukwaensis. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 28 July 2014.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please fill in the feedback form so that we can correct or extend the information provided