Actinopterygii (ray-finned fishes) >
Perciformes (Perch-likes) >
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 / Climate / Range
Ecology
Freshwater; benthopelagic. Tropical, preferred ?; 18°N - 5°N
Africa: Upper and middle Niger, and the rivers Bénoué, Cross and Wouri in Nigeria and Cameroon (Ref. 53405).
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 20.0 cm SL male/unsexed; (Ref. 81260)
Short description
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 the lower limb of the 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 the first to the sixth or seventh; pectoral fin relatively short, rarely reaching the level of the spinous anal fin (Ref. 52346).
Prefers algae and plant matter, as well as invertebrates (Ref. 52307). Maximum total length 26.0 cm (Ref. 42518).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Mouth brooder (male or female is unknown).
Lamboj, A., 2004. The Cichlid Fishes of Western Africa. Birgit Schmettkamp Verlag, Bornheim, Germany. 255 p. (Ref. 52307)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Not Evaluated
Threat to humans
Harmless
Human uses
More information
Age/SizeGrowthLength-weightLength-lengthLength-frequenciesMorphometricsMorphologyLarvaeLarval dynamicsRecruitmentAbundance
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
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Estimates of some properties based on models
Phylogenetic diversity index (Ref.
82805): PD
50 = 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), 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.
69278): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref.
59153): Low to moderate vulnerability (27 of 100) .
