Actinopterygii (ray-finned fishes) >
Perciformes (Perch-likes) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Tylochromis: Greek, tylos = callus + Greek, chromis = a fish, perhaps a perch (Ref. 45335); leonensis: Named in reference to the country in which specimens of the species were first identified (Ref. 52346).
Environment / Climate / Range
Ecology
Freshwater; benthopelagic. Tropical; 24°C - 26°C (Ref. 12468), preferred ?; 10°N - 4°N
Africa: Known from coastal rivers from the Kogon (Guinea) to the Bia (Sierra Leone) (Ref. 53405).
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 21.9 cm SL male/unsexed; (Ref. 53405)
Short description
Morphology | Morphometrics
Dorsal
spines
(total): 13 - 15;
Dorsal
soft rays
(total): 13-16;
Anal
spines: 3;
Anal
soft rays: 7;
Vertebrae: 28. Diagnosis: 2 scale rows between upper lateral line and anterior part of lower lateral line (Ref. 52346, 53405). High lateral line count (38-42); low gill raker count (13-15 along lower limb of first arch); lower pharyngeal jaw with a short, deep keel that is deeply indented along the ventral margin (Ref. 52346).
Appears to be an exclusively Upper Guinean Province species (Ref. 52346). Inhabits large sandbanks and hardly ever penetrates into small streams (Ref. 53407). Benthic macrophage (Ref. 52346). Feeds primarily upon insects and their larvae, but also accepts plants (Ref. 52307). Oviphilous mouthbrooder (Ref. 53407).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Teugels, G.G. and D.F.E. Thys van den Audenaerde, 2003. Cichlidae. p. 521-600. In D. Paugy, C. Lévêque and G.G Teugels (eds.) The fresh and brackish water fishes of West Africa Volume 2. Coll. faune et flore tropicales 40. Institut de recherche de développement, Paris, France, Muséum national d'histoire naturelle, Paris, France and Musée royal de l'Afrique Central, Tervuren, Belgium, 815p. (Ref. 53405)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Not Evaluated
Threat to humans
Harmless
Human uses
More information
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
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=0.01479 (0.00722 - 0.03031), b=2.96 (2.78 - 3.14), based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trophic Level (Ref.
69278): 2.6 ±0.26 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 (29 of 100) .
