Teleostei (teleosts) >
Siluriformes (Catfishes) >
Auchenoglanididae (Flatnose catfishes)
Etymology: Auchenoglanis: Greek, auchen = neck + Greek, glanis = a fish that can eat the bait without touching the hook; a cat fish (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal; pH range: 7.0 - 8.0; dH range: ? - 25; potamodromous (Ref. 51243). Tropical; 24°C - 26°C (Ref. 2059); 35°N - 10°N
Africa: West African rivers from Senegal to Chad basins, and more east in the Nile and Lake Turkana basins (Ref. 96687).
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 54.0 cm SL male/unsexed; (Ref. 3236); max. published weight: 4.4 kg (Ref. 3236)
Dorsal spines (total): 2; Dorsal soft rays (total): 7; Anal spines: 0; Anal soft rays: 6 - 8. Diagnosis: head broad (width at least 2/3 of length); snout length less than 0.9 times head width; hind margin of adipose fin nearly straight; premaxillary dentition forming (in adults) 2 well separated, kidney-shaped plates; maxillary barbels never black and reaching at least to hind margin of eye; 8-11 (usually 9 or 10) gill rakers on lower limb of first gill arch; palatine membrane bilobed (with a large and a smaller lobe); dorsal margin of cleithral process broad and flat (visible only in adults)(Ref. 57126).
Commonly occurs in running water, lakes and submerged vegetation in the Sudd, rare in fringing vegetation. Feeds on the bottom on mud, debris, insects, notably chironomid larvae and mollusks. Gravid fish are recorded throughout the year with a peak in the dry season (Ref. 28714).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Geerinckx, T. and E. Vreven, 2013. A re-evaluation of the species-level diversity within the catfish genus Auchenoglanis (Siluriformes: Claroteidae). J. Nat. Hist. 47(47-48):2979-3010. (Ref. 96687)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Fisheries: commercial; aquarium: commercial
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00525 (0.00218 - 0.01265), 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): 3.1 ±0.41 se; based on food items.
Resilience (Ref.
120179): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (46 of 100).
Nutrients (Ref.
124155): Calcium = 111 [67, 213] mg/100g; Iron = 1.33 [0.82, 2.11] mg/100g; Protein = 16.6 [15.6, 17.6] %; Omega3 = 0.263 [0.112, 0.614] g/100g; Selenium = 76.6 [35.9, 181.6] μg/100g; VitaminA = 28.4 [11.5, 63.5] μg/100g; Zinc = 1.58 [1.12, 2.21] mg/100g (wet weight);
