The capture, in the Senegal River, of an individual measuring 510 mm SL has been mentioned, but not confirmed; the collections of the Museum of natural History in Paris include a head that is said to belong to a specimen collected in the Cavally River measuring 700 mm TL and wighing 4.000 g .
Diagnosis: This species can be distinguished from all other Hepsetus species by the following unique combination of characters: number of lateral line scales high, 49–60; nostril-lower jaw distance high, 40.4–47.6% of head length; number of gill rakers on first arch low, 14–22; number of scales between dorsal fin and lateral line 7.5-9.5; and number of scales between adipose fin and lateral line 4.5-6.5 . : elongated.
Behavioural data for Hepsetus Occidentalis is currently being reviewed.
Diet information for Hepsetus Occidentalis is currently being compiled.
Reproduction data for Hepsetus Occidentalis is currently being compiled.
Freshwater; benthopelagic. Tropical west to the Cavally River, Ivory Coast, in the east (Ref.
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