Classification / Names
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Teleostei (teleosts) >
Siluriformes (Catfishes) >
Mochokidae (Squeakers or upside-down catfishes) > Mochokinae
Etymology: Microsynodontis: Greek, mikros = small + Greek, synodon = with the teeth growing all together (Ref. 45335); nasutus: Species name from the Latin nasutus, meaning large nosed, in reference to the long snout of this species (Ref. 52369).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Tropical
Africa: endemic to the Okano River (Ogowe River tributary) in northern Gabon (Ref. 52369, 81251).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.7 cm SL male/unsexed; (Ref. 52369)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 2; Dorsal soft rays (total): 7; Anal spines: 0; Anal soft rays: 10 - 11; Vertebrae: 36. Diagnosis: snout long (50.0-53.3% HL)(Ref. 52369, 81251). Body moderately slender; adipose fin moderately long, its base 28.2-32.0% SL; caudal peduncle slender, its depth 6.7-9.8% SL; eye diameter 13.8-17.4% SL; supracleithral process not reaching to vertical through posterior-most tip of nuchal shield; body without numerous dark brown elongate spots; dorsal spine curved; anterior edge of pectoral spine with antrorse serrations; both sexes with short (< 0.1 mm) tubercles on dorsal and lateral surfaces of head; caudal fin rounded (Ref. 81251).
Body shape (shape guide): fusiform / normal.
Found in a whitewater river (Ref. 52369).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Ng, H.H., 2004. The Microsynodontis (Teleostei: Siluriformes: Mochokidae) of the lower Guinea region, west central Africa, with the description of eight new species. Zootaxa 531:1-52. (Ref. 52369)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
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