Tylochromis intermedius (Boulenger, 1916)

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

Classification	Actinopterygii \| Perciformes \| Cichlidae \| Pseudocrenilabrinae
Synonyms	Pelmatochromis intermedius, ... more
Common names	Mustaotsaseuloja, 中间球丽鱼, Faragbon, ... more

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Main reference

Stiassny, M.L.J. 1989. (Ref. 52346)
Other references | Biblio | Coordinator : Kullander, Sven O. | Collaborators

Size / Weight / Age

Max length : 23.0 cm SL male/unsexed; (Ref. 52346)

Environment

Benthopelagic; freshwater; pH range: 6.5 - 7.5; dH range: 2 - ?

Climate / Range

Tropical; 24°C - 28°C (Ref. 2059); 14°N - 5°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): 15 - 18; Anal spines: 3; Anal soft rays: 7 - 9; Vertebrae: 31. Diagnosis: 31 vertebrae (Ref. 52346). 3 scale rows between anterior parts of upper and lower lateral line; thin lips and a lower jaw with the posterior end lower than the tip (forming an angle of 15-20° with the horizontal)(Ref. 7378, 52346, 53405). Description: juveniles slender-bodied, while adults are very deep-bodied (Ref. 52307, 52346). Thin lips and a lower jaw with the posterior end lower than the tip (forming an angle of 15°-20° with the horizontal)(Ref. 7378, 52346). Mouth rather small, extending to between nostril and eye; 3 series of scales on the cheek (Ref. 1880). Outer and inner jaw teeth monocuspid; posterior pharyngeal teeth molariform (Ref. 53405). Broad crenate gill-rakers along the lower limb of the first arch and relatively stout epibranchial rakers along the upper limb (Ref. 52346). Micro-gillrakers present (Ref. 53405). Scales cycloid (Ref. 1880, 53405). 3 scale rows between anterior parts of upper and lower lateral line (Ref. 7378, 52307). 38-42 lateral line scales (counted from the start of the upper lateral line, at the end descending to the lower and continuing to the end of the lower lateral line, including the scales between both lines)(Ref. 52346). Upper lateral line with 28-30 scles, lower lateral line with 32-35 scales (Ref. 1880, 2996). Upper lateral line branch terminates in advance of the end of the dorsal fin, usually below about the fifth ray of the free end; terminal canal bearing scales do not usually descend scale rows; dorsal, ventral and median branches extend almost to the periphery of the caudal fin; dorsal fin spines increase rapidly to the fifth or sixth and then are more or less equal in length; anal fin rounded (Ref. 52346). Anal fin spines much stronger than dorsal fin spines (Ref. 1880). Pectoral fins long and frequently extend beyond the level of the soft anal fin; first pelvic branched ray is filamentous and produced; caudal fin strongly emarginate and even in the largest males only finely scaled (Ref. 52346). Coloration: silvery to brownish, with dorsal body parts darker than ventral parts; snout, cheeks and opercula silvery; front of the head between the eyes somewhat darker, with both a light and a dark band (Ref. 52307). Nape stripe might be well marked (Ref. 52346). Pale bluish dots are frequently present in the dorsal, caudal and anal fins (Ref. 52307). Blackish markings on dorsal fin form a wide network on the spinous part and four longitudinal streaks on the soft part; golden longitudinal lines running between the series of scales; pectoral and ventral fins yellow (Ref. 1880, 52346). Young with irregular dark brown cross-bars (Ref. 1880).

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


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 (Preliminary K or Fecundity.)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Low to moderate vulnerability (30 of 100)	Not marketed/unknown

Entered by Sa-a, Pascualita

Modified by Musschoot, Tobias

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Page last modified by : elaxamana, 15 July 2009

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