Brienomyrus longianalis (Boulenger, 1901)
Brienomyrus longianalis
photo by RMCA

Family:  Mormyridae (Elephantfishes)
Max. size:  16 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater, potamodromous
Distribution:  Africa: Niger and some other coastal basins of Guinea and Sierra-Leone, the Kribi River in Cameroon (Ref. 3203).
Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 14-17; Anal spines: 0-0; Anal soft rays: 28-33. SL/BD = 4.4-6.1. Dorsal much smaller than anal inserted almost midway from origin of anal (Dorsal-Anal fin base ratio 0.32-0.46). Pectorals at most as long as head with posterior end not extending beyond origin of pelvic fins. Thin caudal peduncle with height 22.6-31.5 x SL. Color similar to B. brachyistius. Snout projecting and curved downward.(Ref.4967)
Biology:  Affinities: related to Brienomyrus brachyistius, distinguished by longer anal fin in Brienomyrus longianalis and by lower peduncle height SL ratio. May be limited to the delta and the lower reaches of rivers (Ref. 3203).
IUCN Red List Status: Least Concern (LC); Date assessed: 03 September 2019 Ref. (126983)
Threat to humans:  harmless

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