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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

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Africa: endemic to the Okano River (Ogowe River tributary) in northern Gabon (Ref. 52369, 81251).

Size / Weight / Age

Maturity: L_m ? 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).

Found in a whitewater river (Ref. 52369).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

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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 2024-2)

Data deficient (DD) ; Date assessed: 16 February 2009

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01445 (0.00650 - 0.03213), b=2.91 (2.73 - 3.09), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.0 ±0.4 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Microsynodontis nasutus Ng, 2004