Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Schilbeidae
Etymology: nyongensis: Referring to the type locality of this species (River Nyong, Cameroun)(Ref. 43912).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Tropical; 5°N - 3°N
Africa: endemic to the Nyong in Cameroon (Ref. 81643). Only known from the type locality (Ref. 43912).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 13.1 cm SL male/unsexed; (Ref. 43912)
Morphology | Morphometrics
(total): 1. Diagnosis: adipose fin always present (Ref. 43912, 81643) and fully developed (Ref. 81643). Anterior nostrils closer to each other than to the posterior pair; nasal barbel reaching beyond posterior border of eye, sometimes up to anterior edge of opercle; eyes strikingly large (31-32.7% HL); inner side of pectoral spine strongly serrated; snout projecting beyond mouth (Ref. 43912, 81643).
Oviparous, eggs are unguarded (Ref. 205).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Distinct pairing (Ref. 205).
De Vos, L., 1995. A systematic revision of the African Schilbeidae (Teleostei, Siluriformes). With an annotated bibliography. Ann. Mus. R. Afr. Centr., Sci. Zool., 271:1-450. (Ref. 43912)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 118484)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Assuming fec > 10,000).
Vulnerability (Ref. 59153
): Low vulnerability (25 of 100) .