Tilapia rendalli

– Least Concern

Taxonomy

Kingdom:

ANIMALIA

Phylum:

CHORDATA

Class:

ACTINOPTERYGII

Order:

PERCIFORMES

Family:

CICHLIDAE

Scientific Name:

Tilapia rendalli

Species Authority:

(Boulenger, 1896)

Common Name/s:

English

—

REDBREAST TILAPIA

Assessment Information

Red List Category & Criteria:	LC ver 3.1 (2001)
Year Assessed:	2006
Assessor/s:	Natakimazi, G. & Hanssens, M.
Evaluator/s:	Snoeks, J. (Freshwater Fish Red List Authority) & Darwall, W. (Freshwater Biodiversity Assessment Programme)
Justification:	This species has a large native distribution range with no known major widespread threats. It has also been successfully introduced into Lake Victoria and many other dams and river systems where it is now well established.

Geographic Range

Range Description:

Native to the Lake Tanganyika and Malawi Basins and Lakes Chilwa, Chuita and the Shire River (Malawi). Introduced in Lake Victoria and many dams and water systems all over the country, e.g., Pangani drainage (including Lake Jipe), Lake Chala and Athi/Sabaki drainage. Also introduced in the Tana River system (Mann 1966, 1968) (Seegers et al., unpublished). According to Welcomme (1988) and Lever (1996) introduced from an unrecorded source into Kenya in 1955 for stocking (Seegers et al. unpub.). Has also been introduced and is now well settled in upper and middle Akagera system.

Range Map:

(click for detailed map)

Countries:

Native:

Burundi; Tanzania, United Republic of

Introduced:

Kenya

Population

Population:	No information available.
Population Trend:

Habitat and Ecology

Habitat and Ecology:

Tolerant of a wide range of temperatures (11–37°C) and salinity to 19 parts per thousand. Prefers quiet, well-vegetated water along river margins or backwaters, floodplains and swamps (Skelton 1993). Feeds mainly on water plants and algae but also takes aquatic invertebrates and even small fish (Skelton 1993). Breeding pairs clear the vegetation in shallow water to form a nest about 0.5–1.2 m across and excavate tunnel-like brood chambers in which the eggs and larvae are protected. Juveniles up to 15 mm SL remain within the brood chambers. Several broods are raised each summer (Skelton 1993). Max. size: 250 mm (Teugels and Thys van den Audenaerde in Daget et al. 1991)

System:

Freshwater

List of Habitats:

5.5	Wetlands (inland) - Permanent Freshwater Lakes (over 8ha)
5.7	Wetlands (inland) - Permanent Freshwater Marshes/Pools (under 8ha)

Threats

Threats:

Fishing pressure; and loss of vegetated margins and floodplains around rivers and lakes due to agriculture extension.

List of Threats:

1	Habitat Loss/Degradation (human induced) (ongoing)
3.1.1	Harvesting (hunting/gathering) - Food - Subsistence use/local trade (ongoing)
3.1.2	Harvesting (hunting/gathering) - Food - Sub-national/national trade (ongoing)

Conservation Actions

Conservation Actions:

No information available.

List of Conservation Actions:

3.9	Research actions - Trends/Monitoring (needed)
4.1	Habitat and site-based actions - Maintenance/Conservation (needed)

Bibliography

Bibliography:

Daget, J., Gosse, J.P., Teugels, G.G. and Thys van den Audenaerde, D.F.E. (eds). 1991. Check-list of the Freshwater Fishes of Africa (CLOFFA IV) ISNB, Brussels and MRAC, Tervuren, Belgium, and ORSTOM, Paris, France.

Lever, C. 1996. Naturalized Fishes of the World. Academic Press.

Skelton P.H. 1993. A Complete Guide of the Freshwater Fishes of Southern Africa. Southern Book Publishers (Pty), Ltd, Harare.

Welcomme, R.L. 1988. International introductions of inland aquatic species. In: FAO Fisheries Technical Paper 294.

Citation:	Natakimazi, G. & Hanssens, M. 2006. Tilapia rendalli. In: IUCN 2007. 2007 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 29 August 2008.
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