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Tilapia rendalli

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA ACTINOPTERYGII PERCIFORMES CICHLIDAE

Scientific Name: Tilapia rendalli
Species Authority: (Boulenger, 1897)
Common Name(s):
English Blue Tilapia, Congo Tilapia, Northern Redbreast Tilapia, Red-breasted Bream, Redbreasted Bream, Red-breasted Tilapia, Redbreast Tilapia
French Carpe
Spanish Mojarra Mojarra, Mojarrita, Tilapia
Synonym(s):
Chromis rendalli Boulenger, 1897
Chromis rendallii Boulenger, 1897
Tilapia christyi Boulenger, 1915
Tilapia druryi Gilchrist & Thompson, 1917
Tilapia gefuensis Thys van den Audenaerde, 1964
Tilapia kirkhami Gilchrist & Thompson, 1917
Tilapia lata (non Günther, 1862)
Tilapia latifrons Boulenger, 1906
Tilapia mackeani Gilchrist & Thompson, 1917
Tilapia melanopleura (non Duméril, 1861)
Tilapia melanopleura rendalli (Boulenger, 1897)
Tilapia melanopleura swierstra Gilchrist & Thompson, 1917
Tilapia rendalii (Boulenger, 1897)
Tilapia rendalli gefuensis Thys van den Audenaerde, 1964
Tilapia rendalli rendalli (Boulenger, 1897)
Tilapia rendallis (Boulenger, 1897)
Tilapia rendalli swierstrae Gilchrist & Thompson, 1917
Tilapia sexfasciata Pellegrin, 1900
Tilapia swierstrae Gilchrist & Thompson, 1917
Tilapia sykesii Gilchrist & Thompson, 1917
Tilapia zillii (non Gervais, 1848)

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2010
Date Assessed: 2009-05-01
Assessor(s): Awaïss, A., Azeroual, A., Getahun, A., Hanssens, M., Lalèyè, P., Marshall, B., Moelants, T., Ntakimazi, G. & Tweddle, D.
Reviewer(s): Snoeks, J., Tweddle, D., Getahun, A., Lalèyè, P., Paugy, D., Zaiss, R., Fishar, M.R.A & Brooks, E.
Justification:
This species has a wide distribution, with no known major widespread threats. It is therefore listed as Least Concern. It has also been assessed regionally as Least Concern for central, eastern and southern Africa. In north Africa, the species is recorded from Mauritania, but more information is needed on the species distribution and status within the region, and it is therefore categorised as Data Deficient.
History:
2006 Least Concern (IUCN 2006)
2006 Least Concern

Geographic Range [top]

Range Description: Tilapia rendalli is known from the Senegal and Niger Rivers, the Congo to Kenya, and much of southern Africa. It has been introduced elsewhere, usually for weed control and aquaculture. Several countries report adverse ecological impact after introduction.

Central Africa:Tilapia rendalli is naturally known from the Katanga region and in the Lualaba River up to Kisangani (Stanleyville) – Isangi in the Democratic Republic of Congo. . Tilapia rendalli has been introduced as Tilapia melanopleura, for aquacultural purposes, in 1949, from Yangambi, Democratic Republic of Congo, to Yaoundé, Cameroon. According to Thys van den Audenaerde (1966), who observed a few specimens of T. rendalli at the fisheries station of Melen near Yaoundé, the specimens from Yangambi originated from Katanga. Its use for aquaculture in Cameroon has been abandoned. It has also been introduced, for aquacultural purposes, in 1953, from the Democratic Republic of Congo to the fisheries station of Djoumouna, Congo, Congo River basin. According to Moreau et al. (1988) its use in aquaculture was abandoned, but the species probably established in the country. The introduction of T. rendalli into the Lower Guinean part of Congo is confirmed by a museum record originating from a pond at the station of Dimonika. Tilapia rendalli has also been introduced as T. melanopleura, around 1950, from Katanga but originating from the fisheries station of Kinshasa (Leopoldville), Democratic Republic of Congo, to Libreville, Makokou, Lebamba, Franceville and maybe other places in Gabon. Its presence in Gabon is confirmed by museum records from the Ogowe River basin.


Eastern Africa: This species is native to the Lake Tanganyika and Malawi Basins and Lakes Chilwa, Chuita and the Shire River (Malawi). It has been introduced in Lake Victoria and many dams and water systems all over the region, 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. 2003). According to Welcomme (1988) and Lever (1996) it was introduced from an unrecorded source into Kenya in 1955 for stocking (Seegers et al. 2003). It has also been introduced and is now well settled in This species is known from upper and middle Akagera system.

Northern Africa: It is recorded from Mauritania.

Southern Africa:This species is known from the Cunene, Okavango, Zambezi system including Lake Malawi, and east coastal rivers south to the Phongolo and coastal lakes to Lake Sibaya (Skelton 2001), as well as estuaries in Mozambique and KwaZulu-Natal. It is found in all Zimbabwean rivers although it was probably absent originally from the upper Save-Runde and scarce on the highveld (Junor 1969). Its distribution has been extended by translocations, especially into small farm dams, in an attempt to control plant growth.
Countries:
Native:
Angola (Angola); Botswana; Chad; Congo, The Democratic Republic of the; Mozambique; Namibia; South Africa; Swaziland; Tanzania, United Republic of; Zambia; Zimbabwe
Introduced:
Burundi; Cameroon; Congo; Gabon; Kenya; Madagascar; Rwanda; Uganda; United States (Hawaiian Is.)
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This species is thought to be widespread and abundant.
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: Tilapia rendalli is a benthopelagic species that prefers quiet, well-vegetated water along river littorals or backwaters, floodplains and swamps. It is has a wide range of temperature tolerance (8-41°C) (Philippart and Ruwet 1982) and salinity to 19 ppt (Skelton 1993). It forms schools and is mainly diurnal. The juveniles feed on plankton, while adults mainly feed on higher plants and also algae, insects and crustaceans. This species prefers a sloping spawning ground near the marginal fringe of vegetation (Philippart and Ruwet 1982). It builds nest in shallow water where both parents guard the eggs and young.
Systems: Freshwater

Use and Trade [top]

Use and Trade: This species is harvested for human consumption.

Threats [top]

Major Threat(s): The major threats to this species are increased fishing pressure, and loss of vegetated margins and floodplains around rivers and lakes due to agriculture extension.

Conservation Actions [top]

Conservation Actions: This species occurs in many reserves over its wide range.

Citation: Awaïss, A., Azeroual, A., Getahun, A., Hanssens, M., Lalèyè, P., Marshall, B., Moelants, T., Ntakimazi, G. & Tweddle, D. 2010. Tilapia rendalli. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 18 September 2014.
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