Environment: milieu / climate zone / depth range / distribution range
Sinh thái học
; Nước ngọt; Thuộc về nước lợ Sống nổi và đáy; Mức độ sâu 3 - 8 m (Ref. 58302). Tropical; 24°C - 28°C (Ref. 2059); 20°N - 20°S
Africa: from the middle Congo River basin (Kasai drainage and between the Lomami and Kisangani) up to the upper Lualaba and the Bangweulu area (Ref. 55074). Also in Lake Malawi, Zambesi, coastal areas from Zambesi Delta to Natal, Okavango and Cunene (Ref. 5163) as well as the Limpopo, Malagarasi (Ref. 55074) and Lake Tanganyika (Ref. 55074, 74387). Also present in the Cuanza and Catumbela rivers in Angola (Ref. 11970). Introduced in Lake Kivu, escaped from fish ponds (Ref. 107916). Introduced elsewhere usually for weed control and aquaculture. Several countries report adverse ecological impact after introduction.
Length at first maturity / Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm 17.7 range ? - ? cm
Max length : 45.0 cm TL con đực/không giới tính; (Ref. 26550); Khối lượng cực đại được công bố: 2.5 kg (Ref. 26550); Tuổi cực đại được báo cáo: 7 các năm (Ref. 7248)
Các tia vây lưng cứng (tổng cộng): 15 - 17; Các vây lưng mềm (tổng cộng): 10-13; Tia cứng vây hậu môn 3; Tia mềm vây hậu môn: 9 - 10; Động vật có xương sống: 29. Diagnosis: A large, deep-bodied species with a steep head profile, narrow head and small mouth; often appearing brownish with a white belly, some individuals have bright red bellies (Ref. 118638). The sexes look very similar, although males are usually larger (Ref. 118638). Very difficult to distinguish from Coptodon zillii, but C. rendalli usually have a steeper head profile and less prominent vertical bars; in East Africa, the tailfin of C. rendalli is often divided into a brownish upper part and yellowish lower part, whereas that of C. zillii is uniform and spotted (Ref. 118638).
It prefers quiet, well-vegetated water along river littorals or backwaters, floodplains and swamps. They are tolerant of a wide range of temperatures (8-41°C) and salinities (Ref. 3, 7248, 118638). Forms schools; is mainly diurnal. Juveniles feed on plankton (Ref. 52307); adults feed on leaves and stems of underwater plants as well as algae, and vegetative detritus (Ref. 52307), insects and crustaceans. A substrate spawner; male and female form pairs to rear the young; eggs and larvae are usually guarded in a steep-side circular pit dug in the mud (Ref. 118638). Occasionally it spawns in large cave-like structures (Ref. 52307), e.g. in Lake Malawi they are reported to dig a network of tunnels at some sites (Ref. 118638). Make excellent eating (Ref. 5214). Widely exploited in fisheries and aquaculture (Ref. 118638).
Prefers a sloping spawning ground near the marginal fringe of vegetation (Ref. 3). Builds nest in shallow water where both parents guard the eggs and young.
Dunz, A.R. and U.K. Schliewen, 2013. Molecular phylogeny and revised classification of the haplotilapiine cichlid fishes formerly referred to as "Tilapia". Mol. Phylogenet. Evol. 68(1):64-80. (Ref. 93285)
IUCN Red List Status (Ref. 130435)
Threat to humans
Potential pest
Human uses
Các nghề cá: Tính thương mại; Nuôi trồng thủy sản: Tính thương mại; cá để chơi: đúng; Bể nuôi cá: Tính thương mại
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01660 (0.01397 - 0.01971), b=2.98 (2.93 - 3.03), in cm total length, based on LWR estimates for this species (Ref.
93245).
Mức dinh dưỡng (Ref.
69278): 2.3 ±0.1 se; based on diet studies.
Generation time: 3.4 (2.1 - 6.2) years. Estimated as median ln(3)/K based on 18
growth studies.
Thích nghi nhanh (Ref.
120179): Trung bình, thời gian nhân đôi của chủng quần tối thiểu là 1.4 - 4.4 năm (K=0.13-0.18; tmax=7).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (27 of 100).
