Brienomyrus longianalis (Boulenger, 1901)

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

Classification	Actinopterygii \| Osteoglossiformes \| Mormyridae
Synonyms	Marcusenius longianalis, ... more
Common names	长臀壮象鼻鱼, 长臀异吻象鼻鱼, Schmaler Nilhecht, ... more

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Main reference

Lévêque, C.D. Paugy and G.G. Teugels (eds.). 1990. (Ref. 2703)
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Size / Weight / Age

Max length : 16.0 cm SL male/unsexed; (Ref. 2915)

Environment

Benthopelagic; potamodromous (Ref. 51243); freshwater

Climate / Range

Tropical; 25°C - 30°C (Ref. 2060)

Africa: Niger and some other coastal basins of Guinea and Sierra-Leone, the Kribi River in Cameroon (Ref. 3203).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 0; Dorsal soft rays (total): 14 - 17; Anal spines: 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)

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 (Ref. 57073)	Threat to humans
Not Evaluated	Harmless

Human uses


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 (Fec=417-2,252)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Low vulnerability (20 of 100)	Not marketed/unknown

Entered by Cruz, Tess

Modified by Binohlan, Crispina B.

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Page last modified by : elaxamana, 15 July 2009

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