Classificatie / Namen
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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Tylochromis: Greek, tylos = callus + Greek, chromis = a fish, perhaps a perch (Ref. 45335); trewavasae: Named for Dr. Ethelwynn Trewavas who has so generously shared her knowledge of the African Cichlidae with colleagues and students, and who originally brought the unusual Tylochromis specimen to the authors attention (Ref. 52346).
Eponymy: Dr Ethelwynn Trewavas (1900–1993) was an eminent British ichthyologist. [...] (Ref. 128868), visit book page.
Environment: milieu / Klimaatzone / Diepte / distribution range
Ecologie
; zoet water benthopelagisch. Tropical
Africa: known only from the type locality (Meme river, Cameroon) (Ref. 81260).
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ? range ? - ? cm
Max length : 20.0 cm SL mannelijk / geslacht onbekend; (Ref. 5714)
Dorsale stekels (totaal) : 14; Dorsale zachte stralen (totaal) : 14; Anale stekels: 3; Anale zachte stralen: 7; Wervels: 28. Diagnosis: 13 or fewer gill-rakers along lower limb of first arch; 38 lateral line scales; head length 35.2% SL; predorsal length 44.3% SL; rapid rise in dorsal spine length from 1st to 4th; pectoral fins reach to level of spinous anal fin (Ref. 52346).
Mainly feeds on insects and their larvae; maternal mouthbrooder that does not pair-bond (Ref. 52307).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Stiassny, M.L.J., 1991. Tylochromis. p. 526-533. 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. 5714)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-1)
Gevaar voor de mens
Harmless
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): 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), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.2 ±0.47 se; based on food items.
Weerstandsvermogen (Ref.
120179): Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (14 of 100).
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