Classification / Names
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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.
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
; Γλυκού νερού βενθοπελαγικό. Tropical
Africa: Noumbi and Kouilou River drainages in Republic of Congo (Ref. 122428).
Μέγεθος / Βάρος / Age
Maturity: Lm ? range ? - ? cm
Max length : 9.1 cm SL αρσενικό/απροσδιόριστο; (Ref. 122428)
Short description
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Ραχιαίες άκανθες (συνολικά) : 15 - 17; Μαλακές ραχιαίες ακτίνες (συνολικά) : 9 - 11; Εδρικές άκανθες: 3; Μαλακές εδρικές ακτίνες: 7 - 9; Σπόνδυλοι: 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).
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).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
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)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Εργαλεία
Special reports
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Διαδικτυακές πηγές
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01862 (0.00830 - 0.04177), b=3.01 (2.82 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Τροφικό Επίπεδο (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Ελαστικότητα (Ref.
120179): Υψηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού < 15 μήνες (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
