Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Cichliformes (Cichlids, convict blennies) > Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Tylochromis: Greek, tylos = callus + Greek, chromis = a fish, perhaps a perch (Ref. 45335); sudanensis: Named by Daget (1954) presumably in reference to the middle Niger localities he sampled in the French Sudan; the French term "soudanienne" (Soudan) is anglicized by Beadle (1974) and Lowe-McConnell (1975, 1985) as "soudanian" (Ref. 52346).

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; benthopelagic. Tropical; 18°N - 5°N

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

Africa: Upper and middle Niger, and the rivers Bénoué, Cross and Wouri in Nigeria and Cameroon (Ref. 53405).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 20.0 cm SL male/unsexed; (Ref. 81260)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 13 - 16; Dorsal soft rays (total): 13 - 15; Anal spines: 3; Anal soft rays: 7 - 8; Vertebrae: 28 - 29. Diagnosis: 13 or fewer (rarely 14) gill-rakers along lower limb of first arch; 37-43 lateral line scales; head length 28.0-34.1% of standard length; predorsal length 36.5-43.2% of standard length; more gradual rise in dorsal spine length from 1st to 6th-7th; pectoral fin relatively short, rarely reaching level of spinous anal fin (Ref. 52346).

Prefers algae and plant matter, as well as invertebrates; maternal mouthbrooder that does not pair-bond (Ref. 52307). Maximum total length 26.0 cm (Ref. 42518).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Mouth brooder (male or female is unknown).

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

Lamboj, A., 2004. The Cichlid Fishes of Western Africa. Birgit Schmettkamp Verlag, Bornheim, Germany. 255 p. (Ref. 52307)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 10 January 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
Diet compositions
Food consumptions
Food rations
Predators

Ecology
Ecology

Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances

Life cycle
Reproduction
Maturities
Fecundities
Spawnings
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Egg(s)
Egg developments
Larvae
Larval dynamics

Distribution
Countries
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Introductions
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Anatomy
Gill areas
Brains
Otoliths

Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
Fish sounds
Diseases / Parasites
Toxicities (LC50s)

Genetics
Genetics
Electrophoreses
Heritabilities

Human related
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Aquaculture profiles
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Stamps, coins, misc.

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References
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Summary page | Point data | Common names | Photos

Internet sources

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [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), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).

Trophic level (Ref. 69278): 2.6 ±0.25 se; based on food items.

Resilience (Ref. 120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (14 of 100).

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Tylochromis sudanensis Daget, 1954