Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Perciformes Cichlidae

Scientific Name: Gnathochromis permaxillaris
Species Authority: (David, 1936)

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2006
Date Assessed: 2006-01-31
Assessor(s): Bigirimana, C.
Reviewer(s): Snoeks, J. (Freshwater Fish Red List Authority) & Darwall, W. (Freshwater Biodiversity Assessment Programme)
Widespread distribution in deep waters of the lake with no major widespread threats identified.

Geographic Range [top]

Range Description: Endemic to Lake Tanganyika.
Countries occurrence:
Burundi; Congo, The Democratic Republic of the; Tanzania, United Republic of; Zambia
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The population size is not known, but the species is rare.
Current Population Trend: Unknown
Additional data:

Habitat and Ecology [top]

Habitat and Ecology: Gnathochromis permaxillaris is caught in deep water, is a zooplankton feeder and has developed a strikingly protractile mouth apparatus. Moreover, it possesses quite strong conical teeth on the outer tooth row of both jaws, which is unusual in a zooplanktivore. On account of its copepod diet, it may be supposed that G. permaxillaris lives to a large extent above the bottom and can be classified as bathypelagic. The depth of its habitat is linked to the availability of plankton, which varies according to the time of day. Unlike many zooplankton feeders this species does not appear to school.
Systems: Freshwater

Threats [top]

Major Threat(s): Water pollution, organic pollution and other contamination from industrial. Sedimentation.

Conservation Actions [top]

Conservation Actions: There are no conservation measures in place for this species.

Citation: Bigirimana, C. 2006. Gnathochromis permaxillaris. The IUCN Red List of Threatened Species 2006: e.T60493A12364587. . Downloaded on 13 October 2015.
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