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Thysochromis ansorgii  (Boulenger, 1901)

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Thysochromis ansorgii
Female picture by Albering, J.

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: Thysochromis: Greek, thysis, -eos = impulsive + Greek, chromis = a fish, perhaps a perch (Ref. 45335).

Environment / Climate / Range Ecology

Freshwater; demersal; pH range: 6.0 - 8.0; dH range: 5 - 19.   Tropical; 24°C - 26°C (Ref. 2060), preferred ?; 13°N - 3°N

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

Africa: from coastal basins in Ivory Coast (rivers Agnébi, Me, Bia, Comoé, Tano) to forested coastal lowlands in Nigeria (Ogun, Oshun, Niger delta, Ethiop, Calabar, Great Kwa and lower Cross) including the Ouémé in Benin (Ref. 53405, 81260). Also in the Ogooué basin in Gabon and the Kouilou-Niari in Republic of Congo (Ref. 81260).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 8.8 cm SL male/unsexed; (Ref. 53405)

Short description Morphology | Morphometrics

Dorsal spines (total): 13 - 16; Dorsal soft rays (total): 9-11; Anal spines: 3; Anal soft rays: 7 - 9.

Biology     Glossary (e.g. epibenthic)

Pair-bonding, substrate brooder which spawns preferentially in caves or cave-like structures (Ref. 81260). Maximum TL was recorded at 12.0-13.0 cm (Ref. 5706).

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

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

Daget, J., 1991. Thysochromis. p. 480-481. 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. 5706)

IUCN Red List Status (Ref. 115185)

  Least Concern (LC) 

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

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

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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 | ECOTOX | Faunafri | Fishes of Iran | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | 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 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01514 (0.00889 - 0.02578), b=2.99 (2.85 - 3.13), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic Level (Ref. 69278):  3.3   ±0.4 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 (12 of 100) .