Tylochromis jentinki (Steindachner, 1894)

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Actinopterygii \| Perciformes \| Cichlidae \| Pseudocrenilabrinae
Synonyms	Paratilapia jentinki, Pelmatochromis jentinki, Pelmatochromis jentinkii, ... more
Common names	Akpadekui, woglo, bogolo, ... more

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Main reference

Teugels, G.G., C. Lévêque, D. Paugy and K. Traoré. 1988. (Ref. 272)
Other references | Biblio | Coordinator : Kullander, Sven O. | Collaborators

Size / Weight / Age

Max length : 27.0 cm SL male/unsexed; (Ref. 53405)

Environment

Benthopelagic; freshwater; brackish

Climate / Range

Tropical; 14°N - 4°N

Africa: coastal rivers from Gambia to the Tano River in Ghana (Ref. 53405).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 12 - 15; Dorsal soft rays (total): 13 - 18; Anal spines: 3; Anal soft rays: 7 - 10; Vertebrae: 31 - 32. Diagnosis: 3 rows of scales between anterior parts of upper and lower lateral line; lips fleshy; upper edge of lower jaw horizontal when mouth is closed (Ref. 7378, 52307, 52346, 53405). Lower jaw teeth on a distinctly shelf-like elevated processus on the dentary in juveniles and mature females (Ref. 7378). Description: juveniles slender bodied and gracile, but becoming increasingly robust and deep bodied with size; predorsal profile in adults rises steeply over the snout and usually interrupted by a swelling of the interorbital region; deepest body depth along back lies well beyond dorsal fin origin, usually around the fouth or fifth spine (Ref. 52346). Lips fleshy; upper edge of lower jaw horizontal when mouth is closed (Ref. 7378, 52307, 52346, 53405). Lower jaw teeth borne by a distinct process of dentary bone in juveniles and mature females; outer and inner jaw teeth monocuspid; posterior pharyngeal teeth molariform (Ref. 53405). Pharyngeal apophysis of the Tylochromis type (Ref. 53524). Lower pharyngeal jaw relatively short and robust; inferior vertebral apophysis well developed, elongate and vertically oriented; broad crenate gill-rakers along lower limb of first arch; the single hypobranchial raker is broad and somewhat crenate; epibranchial rakers along short upper limb relatively stout (Ref. 52346). Micro-gillrakers present; scales cycloid (Ref. 53405). 3 rows of scales between anterior parts of upper and lower lateral line (Ref. 7378, 52307, 52346). 37-42 lateral line scales (counted from the start of the upper lateral line, at the end descending to the lower lateral line, including the intermediate scales, and continuing to the end of the lower lateral line)(Ref. 7378, 52346). Upper lateral line with 24-35 scales, lower lateral line with 25-36 scales (Ref. 3032). Upper branch of lateral line terminates well in advance of the end of the dorsal fin, usually below tenth to fifth ray from free end; terminal canal bearing scales usually does not descend a row, but occurs in about 5% of the specimens; dorsal, ventral and median branches of lateral line on caudal fin are well developed and extend almost to the fin periphery; dorsal fin spines increase rapidly to the fifth or sixth and are then more or less equal in length; anal fin rounded with a relatively high number of soft rays (Ref. 52346). Anal spines very strong (Ref. 3054). Pectoral fins very long and frequently extend beyond the level of the soft anal fin; first branched pelvic ray filamentous and often produced beyond the soft anal rays; caudal fin emarginate and even in the largest males only finely scaled; caudal scaling fine and limited to the dorsal and ventral fields of the fin in juveniles, young males and large females (Ref. 52346). Coloration: males with some reddish-gold scales on a generaly yellowish background, females greyish-green on a golden background; dorsal fin in both sexes with dark lines forming a net pattern with light meshes; net pattern obvious in females, but interrupted by 2 dark dots in males, which are very clear in sexually mature specimens: one at the base of the first dorsal fin spines and one at the posterior end of the dorsal fin (Ref. 7378, 53405), but these spots may be absent (Ref. 52346). Another black spot delimits the upper lip of the male, while the rest of the head is less dark (Ref. 7378, 53405). Caudal fin greyish in females, yellowish with a brownish black net pattern in males (Ref. 1989, 7378, 53405). Preserved specimens are light or dark brown; juveniles with transversal bands on the sides (juvenile barring) which strongly fade or disappear in mature specimens (Ref. 7378, 53405). In medium sized individuals (ca 16cm SL) faint traces of 5 or 6 vertical stripes extend almost to the midline; nape stripe broad but not particularly strongly differentiated from the generally dark dorsum, and not in contact with the opercular blotch which is faint and diffuse; anal fin of both sexes smokey grey with numerous pale maculae, but lacking in juveniles (Ref. 52346). Pectoral and pelvic fins yellowish to brownish (Ref. 52307).

Prefers brackish water but is also found further upstream in rivers (Ref. 3032). Opportunistic benthic macrophage (Ref. 52346). Prefers insects and their larvae (Ref. 52307).


IUCN Red List Status (Ref. 57073)	Threat to humans
Not Evaluated	Harmless

Human uses
Fisheries:


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

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Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

High, minimum population doubling time less than 15 months (K=0.7)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Low vulnerability (22 of 100)	Not marketed/unknown

Entered by Binohlan, Crispina B.

Modified by Bailly, Nicolas

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Page last modified by : elaxamana, 15 July 2009

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