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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); nannoculus: Species name from the Latin nanus, meaning small, and oculus, meaning eye; in allusion to the relatively small eye (Ref. 52369).

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

Freshwater; demersal. Tropical

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Africa: endemic to the Kyé River (Ntem River tributary) in eastern Equatorial Guinea (Ref. 52369).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 3.9 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: 11 - 13; Vertebrae: 36. Diagnosis: body moderately slender, deep (17.6-19.9% SL); anterior edge of pectoral spine with anteriorly directed serrations along proximal half; eye diameter 10.6-12.2% SL; snout length 47.9-48.0% SL; supracleithral process not reaching to vertical through posterior-most tip of nuchal shield; adipose fin base short, 29.4-33.8% SL; body without numerous dark brown elongate spots; caudal peduncle slender, its depth 9.2-9.8% SL; both sexes with short (< 0.1 mm) tubercles on dorsal and lateral surfaces of head (Ref. 81251). Caudal fin rounded; dorsal spine curved (Ref. 52369, 81251).

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

Main reference Upload your references | References | Coordinator | Collaborators

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 nannoculus Ng, 2004