Marcusenius macrolepidotus macrolepidotus (Peters, 1852)

Bulldog

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

Classification	Actinopterygii \| Osteoglossiformes \| Mormyridae
Synonyms	Mormyrus macrolepidotus, Gnathonemus macrolepidotus, Hippopotamyrus macrolepidotus, ... more
Common names	Tana-bulldog, Elephant nose, Ndaka, ... more

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Image of Marcusenius macrolepidotus macrolepidotus (Bulldog)

Picture by Seegers, L.

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Main reference

Gosse, J.-P. 1984. (Ref. 3203)
Other references | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 32.0 cm TL male/unsexed; (Ref. 27292); max. published weight: 500 g (Ref. 7248)

Environment

Demersal; potamodromous (Ref. 51243); freshwater; pH range: 7.0 - ? ; dH range: 10 - ?

Climate / Range

Tropical; 22°C - 24°C (Ref. 12468); 20°S - 31°S

Africa: Upper Congo basin, Zambezi, east flowing rivers of Tanzania (Ruaha) and Natal (Umhlattuzi). Widespread and common in the Cunene and Okavango systems (Ref. 7248).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 0; Dorsal soft rays (total): 23 - 26; Anal spines: 0; Anal soft rays: 28 - 32. Chin elongated (Ref. 13337) with small bulge (Ref. 4967).

Caught with dipnets in the Kafue floodplain, Zambia. Prefers well-vegetated, muddy bottomed marginal habitats of rivers and floodplains. A shoaling species which moves inshore after dark. Migrates within rivers. Recorded to move up tributaries in shoals during flood season (Ref. 13337). Feeds on invertebrates, especially midge and mayfly larvae and pupae taken from the bottom and off plant stems. Breeds during the rainy season in shallow vegetated localities; females carry up to 6,000 eggs (Ref. 7248). Possesses electroreceptors over the entire head and on the ventral and dorsal regions of the body, but absent from the side and the caudal peduncle where the electric organ is located (Ref. 10011).


IUCN Red List Status (Ref. 57073)	Threat to humans
Least Concern (LC)	Harmless

Human uses
Fisheries: ; 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

Tools
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Summary page \| Point data \| Common names \| Photos

Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

High, minimum population doubling time less than 15 months (K=0.7-1.1)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Low vulnerability (19 of 100)	Not marketed/unknown

Entered by Luna, Susan M.

Modified by Boden, Gert

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Page last modified by : elaxamana, 15 July 2009

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