Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Mochokidae
(Squeakers or upside-down catfishes)
Etymology: Microsynodontis: Greek, mikros = small + Greek, synodon = with the teeth growing all together (Ref. 45335); hirsuta: Species name from the Latin hirsutus, meaning hairy; in reference to the long tubercles on the dorsal and lateral surfaces of the head, which gives the species a somewhat hairy appearance of the head (Ref. 52369).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal; pH range: 5.0 - 5.0. Tropical
Africa: endemic to the Nye River (Ntem River basin) in northern Gabon (Ref. 52369, 81251).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.8 cm SL male/unsexed; (Ref. 52369)
Morphology | Morphometrics
soft rays: 11 - 12;
Vertebrae: 36 - 37. Diagnosis: males with long (> 0.1 mm, up to 0.3 mm) tubercles on dorsal and lateral surfaces of head, females with comparatively longer (ca. 0.05 mm vs 0.02 mm) tubercles than congeners (Ref. 52369, 81251). Adipose fin very long, its base 34.6-37.9% SL; body without numerous dark brown elongate spots; caudal peduncle slender, its depth 7.1-7.8% SL (Ref. 81251). Anterior edge of pectoral spine with antrorse serrations; caudal fin rounded (Ref. 52369, 81251).
Found in a fast-flowing creek over a rock/pebble substrate (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. 123251)
CITES (Ref. 118484)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01318 (0.00585 - 0.02970), b=2.96 (2.77 - 3.15), 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.).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .