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Congolapia bilineata  (Pellegrin, 1900)

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Congolapia bilineata
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Cichlidae (Cichlids) > Cichlinae
Etymology: Congolapia: Congolapia is a contraction of the words Congo and Tilapia; all species of Congolapia are only known from the central Congo basin..   More on author: Pellegrin.

Environment / Climate / Range Ecology

Freshwater; demersal.   Tropical, preferred ?

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Africa: central Congo River basin in the western Cuvette Centrale and central Cuvette Centrale, including the rivers Alima, Lefini, lower Sangha, Ruki and Maringa (Ref. 55074, 74387, 92878), in Democratic Republic of the Congo and Republic of Congo.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 17.5 cm SL male/unsexed; (Ref. 92878)

Short description Morphology | Morphometrics

Dorsal spines (total): 16 - 17; Dorsal soft rays (total): 9-11; Anal spines: 3; Anal soft rays: 8 - 9. Diagnosis: Congolapia bilineata differs from C. crassa and C. louna by having one complete scale row and one additional scale row with smaller dorso-ventrally compressed scales between the upper lateral line and the base of the last dorsal spine vs. two complete scale rows and one additional row of very small scales in-between (Ref. 92878). Further, C. bilineata differs from C. crassa by a shallower body with only a minimal overlap, 32.2-40.5% of standard length vs. 40.4-48.4%; and from C. louna by a shorter last dorsal spine, 9.4-12.2% of standard length vs. 12.9-15.0% (Ref. 92878). All scales cycloid; 26-27 scales on horizontal line; 17-22 upper lateral line scales; 8-11 lower lateral line scales (Ref. 92878). Colour: Background colourlight olive-green to yellowish, chest and belly light yellow to whitish with small reddish dots; lower half of head yellowish olive, especially on cheek, and upper half of head olive-green; upper lip bluish and lower lip whitish; a horizontal iridescent blue line above anterorostral margin of preopercle; iris dark brown (Ref. 92878). Apparently depending on motivational state, body with six or seven black backward slanted, unbranched (not Y-shaped) bars and a nape band or two black stripes along the lateral line; a yellow line between these two lines; black thin lachrymal stripe extending from lachrymal to jaw angle; black opercular spot, extended into a sloping stripe (Ref. 92878). Pectoral fin light greenish to hyaline with a yellow base, pelvic fin and anal fin greenish yellow; dorsal fin greenish, yellow edged, no clear 'tilapia spot', except for juveniles; caudal fin greenish yellow (Ref. 92878).

Biology     Glossary (e.g. epibenthic)

Congolapia bilineata is found in grass-bank as well as forest-bank habitats, and this during the dry as well as wet season (Ref. 92878).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : Kullander, Sven O. | Collaborators

Teugels, G.G. and D.F.E. Thys van den Audenaerde, 1991. Tilapia. p. 482-508. In J. Daget, J.-P. Gosse, G.G. Teugels and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 4. (Ref. 5163)

IUCN Red List Status (Ref. 109396)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries:
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00525 (0.00230 - 0.01199), b=3.15 (2.95 - 3.35), based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.6   ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low vulnerability (24 of 100) .
Price category (Ref. 80766):   Unknown.