>
Siluriformes (Catfishes) >
Schilbeidae (Schilbid catfishes)
Etymology: grenfelli: Named for the collector of the type specimen, Mr. G. Grenfel, Protestant missionary (Ref. 43912).
Eponymy: George Grenfell (1849–1906) was an explorer and a Baptist missionary in Cameroon (1875–1877) and the Congo Free State (Democratic Republic of the Congo) (1877–1906). [...] (Ref. 128868), visit book page.
More on author: Boulenger.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce demersale. Tropical; 23°C - 26°C (Ref. 12468); 5°N - 0°N
Africa: lower, middle and upper Congo River basin, including Pool Malebo (= Stanley Pool); Ogooué and Nyanga basins in Gabon; Ntem-Campo, Nyong and Lokoundje basins in Cameroon (Ref. 43912). Also in the Mitemboni River (Gabon-Equatorial Guinea border) and lower Nkomi River basin (Gabon)(Ref. 81643). Reports from the Lali River (upper Kouilou basin) in Republic of Congo or from the Chad basin are based on misidentified specimens; presence in the Ruzisi unlikely, based on a single specimen that is probably mislabelled (Ref. 43912).
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 50.7 cm SL maschio/sesso non determinato; (Ref. 81643)
Spine dorsali (totale) : 1. Diagnosis: adipose fin present (Ref. 43912, 81643) and fully developed (Ref. 81643). Anterior nostrils closer to each other than the posterior pair; nasal barbel not reaching beyond the posterior border of the eye; inner side of pectoral spine weakly serrated; snout reaching beyond lower jaw; head rounded (Ref. 43912, 81643).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Omnivorous or predominantly carnivorous, feeding on fruits, leaves, grains, insect larvae and nymphs, and small fish; very voracious; juveniles found in floodplains during the rainy season, often hidden under floating trunks of trees which seems a favorite place for juvenile Schilbe and numerous other fish larvae; active swimmer, especially during the night, probably resting near the bottom during daytime (Ref. 43912). Oviparous, eggs are unguarded (Ref. 205). Important species in fishery terms (Ref. 78218). Flesh of this fish very tasty, its price rather elevated (Ref. 43912).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
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)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Pesca: commerciale
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
|
Bayesian length-weight
|
a=0.00794 (0.00346 - 0.01822), b=3.07 (2.88 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Livello trofico (Fonte Biblio. 69278) |
3.5 ±0.5 se; based on size and trophs of closest relatives |
Resilienza (Fonte Biblio. 120179) |
Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Assuming fec > 10,000). |
Vulnerabilità della pesca (Ref. 59153) |
Moderate to high vulnerability (55 of 100). 🛈 |
Categoria di prezzo (Ref. 80766) |
Unknown.
|
Nutrienti (Ref. 124155) |
Calcium = 90.7 [38.7, 207.3] mg/100g; Iron = 1.26 [0.60, 2.34] mg/100g; Protein = 16.8 [15.0, 18.6] %; Omega3 = 0.48 [0.18, 1.26] g/100g; Selenium = 82.4 [36.0, 180.7] μg/100g; VitaminA = 36.8 [13.7, 95.6] μg/100g; Zinc = 1.47 [0.97, 2.10] mg/100g (wet weight); |