Actinopteri (ray-finned fishes) > Siluriformes
(Catfish) > Claroteidae
(Claroteid catfishes) > Auchenoglanidinae
Etymology: Notoglanidium: Greek, noton = back + Greek, glanis = a fish that can eat the bait without touching the hook; a cat fish; diminutive (Ref. 45335); macrostoma: From Greek, makros (big) and stoma (mouth), referring to the large mouth of the species (Ref. 94168). The species name macrostomus (Ref. 58032) is an unjustified emendation, as it is a compound noun and therefore must not agree in gender with the genus name (Ref. 98168). More on author: Pellegrin.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal; pH range: 6.5 - 8.0; dH range: 4 - 25. Tropical; 23°C - 27°C (Ref. 1672); 5°N - 10°S
Africa: Lower Guinea river basins from the Sanaga River in Cameroon to the Chiloango in Angola (Ref. 81642, 94168). Also in the northern half of the Congo River basin (Ref. 94168), including the Dja in Cameroon (Ref. 27938), the Sangha in Congo Republic (Ref. 94168) and the middle Congo River basin in Democratic Republic of the Congo (Ref. 27938, 94168).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 28.1 cm SL male/unsexed; (Ref. 94168)
soft rays: 10 - 12;
Vertebrae: 38. Diagnosis: combined premaxillary tooth plate very broad, 33.5-41.7% of head length vs. 30.1-35.3% in N. boutchangai, and less than 30% in the other species; eye diameter large, 9.1-13.3% of head length vs. smaller in N. maculatum, N. pallidum and N. depierrei, but overlapping with eye size range of the other species; interorbital distance rather large, 28.0-36.6% of head length vs. 24.0% or less in N. akiri, N. depierrei, N. pallidum and N. pembetadi; only 7 soft dorsal-fin rays vs. more than 8 in N. depierrei, N. maculatum, N. pallidum, N. pembetadi, N. thomasi and N. walkeri; dorsal fin spine rather long, 6.9-14.7% of standard length vs. shorter in N. depierrei, N. maculatum, N. pembetadi and N. thomasi (Ref. 94168).
Feeding on a wide variety of foods, including such things as fish fry and eggs, crustaceans, insect larvae, and plant material (Ref. 6868).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Geerinckx, T., E. Vreven, M. Dierick, L.V. Hoorebeke and D. Adriaens, 2013. Revision of Notoglanidium and related genera (Siluriformes: Claroteidae) based on morphology and osteology. Zootaxa 3691(1):165-191. (Ref. 94168)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00525 (0.00224 - 0.01232), b=3.09 (2.88 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.8 ±0.59 se; based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (30 of 100) .