Golden Nile catfish

📖 Overview

In those parts where Chrysichthys maurus and Chrysichthys auratus overlap (from Liberia to Ghana, to the east of the Volta), C. auratus does not enter rivers, but remains in estuaries and lagoons, where both species are sympatric; in the coastal region, C. auratus has been reported as C. filamentosus . Found in lakes and coastal rivers and appears to tolerate a certain amount of salt . Occurs usually over soft, slightly muddy substrates or substrates with heavy layers of leafy detritus in deep, relatively quiet waters . Feeds on mollusks and small crustaceans (Branchiopods, Copepods, Ostracoda) which it digs from the substrate , and also on insects and fish .

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 2; Dorsal soft rays (total): 5 - 6; Anal spines: 0. Diagnosis: 1st branched dorsal-fin ray longest, nearly always extended into a long filament that may reach, or even exceed, the base of the caudal fin; in some individuals or populations (Mafou on the upper Niger; rivers Cross, Ogowe, Nyong; Sanaga estuary) this filament is strongly reduced, but the first branched ray remains the longest . In other populations this filament is particularly elongate (Sanaga mainstream and coastal rivers of Cabinda) . Usually 8 branched rays in pectoral fins , rarely 7 or 9 , 2nd and 3rd rays sometimes filamentous . Exhibits pronounced intraspecific variability, and a clinal series can be demonstrated in the size of the adipose fin and the number of gill rakers . Either 9-13 gill rakers on lower limb of first gill arch and base of adipose fin longer than dorsal-fin base (Nilo-Sudanese region = populations from Nile, Chad, Senegal and the upper courses of the Niger, Comoé, Benue and Volta), or 12-15 lower gill rakers and base of adipose fin shorter than, or equal to, dorsal-fin base (coastal zones from Liberia to Cabinda); populations from the middle and lower courses of coastal rivers in this region are more or less intermediate in regard to these characters . Pronounced dimorphism between mature males in reproductive activity and immature males . : elongated.

🌀 Behaviour

Behavioural data for Golden Nile catfish is currently being reviewed.

🦐 Diet

Diet information for Golden Nile catfish is currently being compiled.

🥚 Reproduction

🌍 Habitat & Distribution

Freshwater; brackish; demersal; potamodromous . Tropical; 26°C - 31°C ; 36°N - 2°N, 16°W - 34°E West African hydrographic basins, except in the coastal areas between Gambia and Liberia, where it is replaced by Chrysichthys maurus (Ref.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🍽️ Edibility & Flavour

"Golden Nile catfish is an edible species."

⚡ Nutrition

Detailed nutritional data for Golden Nile catfish is currently being compiled from USDA FoodData Central.

🔬 Mercury Safety

Mercury data for Golden Nile catfish has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.

🌿 Sustainability

🌐 Names & Taxonomy

Scientific Synonyms

🐠 Related Species

🔍 Similar Species

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 284 records indexed .

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