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> Characiformes (Characins) > Distichodontidae (Distichodus)
Etymology: Nannocharax: Latin, nannus = small + Greek, charax = a marine fish without identification (Ref. 45335); rubrolabiatus: From the Latin ruber (red) and labium (lip) after its bright red colored lips (Ref.26632).

Environment: milieu / climate zone / depth range / distribution range Ökologie

; süßwasser pelagisch. Tropical; 23°C - 25°C; 8°N - 4°S

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Africa: Lower Guinea endemic, only known from the Sanaga River basin, Cameroon (Ref. 26632, 81638).

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 6.1 cm SL Männchen/unbestimmt; (Ref. 81638)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 0; Rückenflossenweichstrahlen (insgesamt) : 12 - 14; Afterflossenstacheln: 0; Afterflossenweichstrahlen: 9 - 10; Wirbelzahl: 37. Diagnosis: 50-53 (Ref. 81638) or 46 (Ref. 26632) scales in lateral line. 6-7 anal fin branched rays; dorsal portions of body with distinct dark, vertically oriented dark marks that form saddle-shaped pigmentation pattern; prominent horizontally elongate, dark spots on mid-lateral surface of body (Ref. 81638).

Found under rocks, in riffles of moderately large rivers (30-50m) in the savannah zone, in areas where there is a strong current (>1m/sec); in all sites where collection took place, there was a rather restricted gallery of shrubs and small trees on the river banks; water was greenish with a transparency of about 50 cm, neutral pH (6.5-7.5), with a high content of dissolved oxygen (6.5-7.5 mg/l) and a rather low conductivity (35-45 µS/cm); water temperatures were between 23 and 25 °C at noon (Ref. 26632).

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

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Van den Bergh, E.C., G.G. Teugels, E.J. Coenen and F. Ollevier, 1995. Nannocharax rubrolabiatus, a new species of distichodont fish from the Sanaga River Basin in Cameroon, Africa (Teleostei: Distichodontidae). Ichthyol. Explor. Freshwat. 6(4):349-356. (Ref. 26632)

IUCN Rote Liste Status (Ref. 130435: Version 2024-1)

gefährdet, siehe IUCN Red List (VU) (B2ab(iii)); Date assessed: 16 February 2009

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

Fischereien: kommerzielles potential

FAO - Publication: search | FishSource |

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Nannocharax rubrolabiatus Van den Bergh, Teugels, Coenen & Ollevier, 1995