Brevimyrus niger (Günther, 1866)
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Family:  Mormyridae (Elephantfishes)
Max. size:  15 cm TL (male/unsexed)
Environment:  benthopelagic; freshwater; pH range: 5,
Distribution:  Africa: most of the great sahélo-soudanian basins (Senegal, Gambie, Niger, Volta, Ouémé and Chad). Also known from the White Nile (Ref. 3203).
Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 14-20; Anal spines: 0-0; Anal soft rays: 24-30. LS/D 2.9-4.3;LS/PD 10.8-15.5. Pectoral fin longer or at least as long as head. Globular swelling on chin reduced. Base of dorsal fin 0.51-0.78 x of the anal fin base. Generally uniformly silver color but may sometimes be irregularly mottled on the sides.
Biology:  Inhabits fringing vegetation in the Sudd and migrates onto the floodplain to spawn. Bottom feeding insectivore (Ref. 28714). Possesses electro receptors over the entire head, the dorsal and ventral regions of the body, but absent from the side and the caudal peduncle where the electric organ is located (Ref. 10011). Also sensitive to sound frequencies (Ref. 10831).
IUCN Red List Status: Least Concern (LC); Date assessed: 23 October 2019 Ref. (123251)
Threat to humans:  harmless
Country info:   

Entered by: Cruz, Tess - 17.03.92
Modified by: Reyes, Rodolfo B. - 02.05.16
Checked by: Sa-a, Pascualita - 26.08.94

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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