Mormyrus longirostris Peters, 1852

Eastern bottlenose mormyrid

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Actinopterygii \| Osteoglossiformes \| Mormyridae
Synonyms	Mormyrus mucupe, ... more
Common names	Elephant-snout, Oostelike bottelneus, Botomu, ... more

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Image of Mormyrus longirostris (Eastern bottlenose mormyrid)

Picture by Seegers, L.

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Main reference

Gosse, J.-P. 1984. (Ref. 3203)
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Size / Weight / Age

Max length : 75.0 cm SL male/unsexed; (Ref. 7248); max. published weight: 10,000 g (Ref. 7248)

Environment

Demersal; potamodromous; freshwater

Climate / Range

Tropical; 11°S - 21°S

Africa: Lower and middle Zambezi River, lower Sabi and Ludi Rivers, Luapula-Moero-Bangwelo system. Also known from the Zambian-Congo system, and the Ruvuma and Rufiji rivers in Tanzania (Ref. 7248), also Lake Malawi, Rukwa, Tanganyika, and other eastward flowing rivers (Ref. 4967).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal soft rays (total): 65 - 75; Anal soft rays: 17 - 19

Found in caves and muddy areas, also hides among weeds. Forms shoal (Ref. 13337). Feeds on insects and weeds but may also feed on small fishes (Ref. 5595), blood worms, small crustaceans and mollusks (Ref. 13337). Active mainly at night. Breeds during the rainy season, moving upstream in rivers after flood spates have receded. Migrations appears to occur at irregular interval as this fish is not a powerful swimmer and would not be able to cope with very high water current (Ref. 13337). Females carry 10,000-70,000 eggs. Can give a mild shock when caught (Ref. 7248).


IUCN Red List Status (Ref. 57073)	Threat to humans
Not Evaluated	Other (Ref. 7248)

Human uses
Fisheries: commercial; gamefish: yes; aquarium: commercial


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

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Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

Medium, minimum population doubling time 1.4 - 4.4 years (K=0.22)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Moderate to high vulnerability (47 of 100)	Not marketed/unknown

Entered by Luna, Susan M.

Modified by Torres, Armi G.

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Page last modified by : elaxamana, 15 July 2009

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