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Orthochromis polyacanthus  (Boulenger, 1899)

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Orthochromis polyacanthus
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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) > Pseudocrenilabrinae
Etymology: Orthochromis: Greek, ortho = straight + Greek, chromis = a fish, perhaps a perch (Ref. 45335).

Environment / Climate / Range Ecology

Freshwater; benthopelagic.   Tropical; 25°C - 26°C (Ref. 12468), preferred ?; 1°N - 10°S

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

Africa: endemic to Lake Mweru (Ref. 26626). Reports from the lower Congo rapids (Ref. 82335), Lindi (Ref. 82324), Wagenia Falls (Ref. 82324, 106245) and Lualaba (82324) are either unconfirmed and questionable, or belong to other species (Ref. 26626, 106290). Reports from the Kalungwishi and Luongo (Lake Mweru basin, Zambia) refer to other species (Ref. 26626).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 11.8 cm TL male/unsexed; (Ref. 4983)

Short description Morphology | Morphometrics

Dorsal spines (total): 18 - 19; Dorsal soft rays (total): 9; Anal spines: 3; Anal soft rays: 7; Vertebrae: 31 - 32. Cheek squamation, variable, a scaleless area anteroventrally; chest squamation, minute and deeply embedded scales, sometimes with bilaterally scaleless area (Ref. 28906). Nape-nuchal scales visible, larger than those of found on the ventral surface of the belly (Ref. 26626).

Biology     Glossary (e.g. epibenthic)

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

Mouthbrooding by females.

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

Greenwood, H.P. and S.O. Kullander, 1994. A taxonomic review and redescription of Tilapia polyacanthus and T. stormsi (Teleostei: Cichlidae), with descriptions of two new Schwetzochromis species from the Upper Zaire River drainage. Ichthyol. Explor. Freshwat. 5(1):161-180. (Ref. 26626)

IUCN Red List Status (Ref. 109396)

  Least Concern (LC) 

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

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

More information

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Ciguatera
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Tools

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Special reports

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Summary page | Point data | Common names | Photos

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 = 0.5001   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), based on all LWR estimates for this body shape (Ref. 93245).
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low vulnerability (13 of 100) .