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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Thysochromis: Greek, thysis, -eos = impulsive + Greek, chromis = a fish, perhaps a perch (Ref. 45335); emili: The species is named for Emil Woolf Kentridge-Young, grandson of William Kentridge and Anne Stanwix, in recognition of their support of research in Africa (Ref. 122428).
Eponymy: Professor Dr Dirk Frans Elisabeth Thys van den Audenerde (d: 1934) is a Belgian ichthyologist and Museum Director. [...] Emil Woolf Kentridge-Young is the grandson of South African artist and animator of c. [...] (Ref. 128868), visit book page.
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
; zoet water benthopelagisch. Tropical
Africa: Noumbi and Kouilou River drainages in Republic of Congo (Ref. 122428).
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ? range ? - ? cm
Max length : 9.1 cm SL mannelijk / geslacht onbekend; (Ref. 122428)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 15 - 17; Dorsale zachte stralen (totaal) : 9 - 11; Anale stekels: 3; Anale zachte stralen: 7 - 9; Wervels: 24 - 26. Diagnosis: Thysochromis emili is distinguished from its West African congener, T. ansorgii, by the following combination of characters: fewer scale rows between the pectoral and pelvic-fin origins, 3-4 vs. 5-6; jaw teeth closely spaced and evenly implanted over entire length of both upper and lower jaws vs. widely spaced and unevenly implanted along distal portions; a supraoccipital crest that is continuous with the frontal ridge vs. terminating posterior to frontal ridge (Ref. 122428); a shorter postorbital length, 38.2-41.9% of head length vs. 42.8-46.7%; and a shorter caudal peduncle length, 7.7-11.3% of standard length vs. 11.4-12.7% (Ref. 122428).
Body shape (shape guide): short and / or deep.
Found in well oxygenated lakes and rivers situated in higher order systems of the Kouilou and Noumbi River basins (Ref. 122428). It occurs over sandy substrate in shallow, less than 0.5 m deep, clear, shoreline waters fringed by abundant overhanging vegetation, deeply undercut banks and root wads (Ref. 122428). It is probably a pair-bonding, cave brooder (Ref. 122428).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Walsh, G., A. Lamboj and M.L.J. Stiassny, 2020. Review of the cichlid genus Thysochromis (Teleostei: Ovalentaria) with the description of a new species from the Kouilou Province in the Republic of Congo, west-Central Africa. J. Fish Biol. 2020:96 (5):1176-1185. (Ref. 122428)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
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Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01905 (0.00846 - 0.04293), b=3.01 (2.82 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref.
120179): Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Kwetsbaarheid van de visserij (Ref.
59153): Low vulnerability (10 of 100).
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