Classification / Names
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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
Écologie
; eau douce démersal. Tropical
Africa: endemic to the Okano River (Ogowe River tributary) in northern Gabon (Ref. 52369, 81251).
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 3.7 cm SL mâle / non sexé; (Ref. 52369)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 2; Rayons mous dorsaux (Total) : 7; Épines anales: 0; Rayons mous anaux: 10 - 11; Vertèbres: 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
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves
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)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
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Sources Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01445 (0.00644 - 0.03242), b=2.90 (2.71 - 3.09), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 3.0 ±0.4 se; based on size and trophs of closest relatives
Résilience (Ref.
120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
