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Brienomyrus niger in Sudan

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Brienomyrus niger   (Günther, 1866)
Family:	Mormyridae (Elephantfishes)			picture () by ( not available )
Order:	Osteoglossiformes  (bony tongues)
Class:	Actinopterygii (ray-finned fishes)
FishBase name:
Max. size:	13.0 cm SL (male/unsexed; Ref. 2915)
Environment:	benthopelagic; pH range: 5
Climate:	tropical; 22 - 24°C
Global Importance:
Resilience:	Medium, minimum population doubling time 1.4 - 4.4 years (Assuming Fec < 5,000)
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)
Threatened:	Not Evaluated, see IUCN Red List  , (Ref. 36508)
Dangerous:	harmless
Coordinator:
Main Ref:	Bigorne, R.. 1990. (Ref. 2915)
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Sudan country information
Common names:	Um shiffa, Akon opio, Mbongo mbongo		Ref:  Bailey, R.G., 1994
Status:	native		Ref:
Salinity:	freshwater
Regulations:	no regulations		Ref:
Uses:	no uses
Comments:	Occurs in the Ghazal and Jebel systems (Ref. 28714).
Country Information:	www.cia.gov/cia/publications/factbook/geos/su.html
Occurrences:	Occurrences    Point map
Main Ref:	Bailey, R.G., 1994
Update

More information:	Countries FAO areas Occurrences Introductions Ecosystem Ecology Diet Food items Food consumption Ration Predators Ciguatera Fish loss Common names Synonyms Pictures Sounds Reproduction Maturity Spawning Eggs Egg dev. Larvae Larval dynamics References Growth L-W relationship L-L relationship Length frequencies Recruitment Max. age & size Metabolism Morphology Morphometrics Gill area Brains Vision Collaborators Genetics Allele frequencies Heritability Strains Aquaculture Aquaculture profile Diseases Ecotoxicology Processing Speed Swim. type Stamps
	Note: No data are available if label is black .
Tools:	Biogeographic modelling | E-book | Field guide | Identification keys | Length-frequency Wizard | Life-history tool | Point map |
Internet sources:	BiOSC Point Data | CISTI | Google | GOBASE | GenBank ( genome, nucleotide ) | PubMed | Scirus | Tree of Life | Zoological Record
	Note: use the Back button of your browser to return to FishBase.
	Entered:  Sa-a, Pascualita

	Ref.:				Glossary
		(e.g. 9948)				(e.g. cephalopods)
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Page created by: Eli, 20.10.03, last modified by Eli, 26.06.07