Hippopotamyrus discorhynchus (Peters, 1852)

Zambezi parrotfish

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

Classification	Actinopterygii \| Osteoglossiformes \| Mormyridae
Synonyms	Mormyrus discorhynchus, Cyphomyrus discorhynchus, Marcusenius discorhynchus, ... more
Common names	Zambesi parrotfish, 斯氏河马长颌鱼, Zambezi-papegaavis, ... more

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Image of Hippopotamyrus discorhynchus (Zambezi parrotfish)

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 : 31.0 cm SL male/unsexed; (Ref. 4967); max. published weight: 1,100 g (Ref. 7248)

Environment

Demersal; freshwater

Climate / Range

Tropical; 22°C - 24°C (Ref. 12468); 11°S - 21°S

Africa: Upper Congo basin, Lakes Tanganyika, and Malawi, Zambezi and Cubango Rivers (Ref. 3203). Also found in the Cunene, Okavango, Buzi and Pungwe rivers. Occurs also in Lake Bangweulu, Lake Mweru and Save river (Ref. 13337). Absent from the Kafue River (Ref. 7248).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 0; Dorsal soft rays (total): 30 - 36; Anal spines: 0; Anal soft rays: 23 - 27. Chin with fleshy bulge, snout rounded, in front of mouth, eye well above mouth (Ref. 4967). Male develops concavity to the margin of the anal fin, whereas that of female is straight. The high back, with the dorsal fin approximately one third of the total length of the fish, serves to separate it satisfactorily from other mormyrids in Zimbabwe (Ref. 13337).

Nocturnal shoaling species; favors large river channels with a soft bottom and fringing vegetation (Ref. 7248). Found mainly in sheltered bays, lagoons and swampy areas. Occurs also in typical sandy or rocky rivers (Ref. 13337). Feeds on insect larvae at night (Ref. 5595). Known to migrate up tributary rivers of Lake Kariba during rainy season, though it is not yet clear whether this is a breeding migration (Ref. 13337). Breeds during the rainy season; females carry up to 5,000 eggs.


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

Human uses
Fisheries: minor commercial; 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
Biogeographic modelling \| Bio-Quiz \| E-book \| Field guide \| Identification keys \| Length-frequency wizard \| Life-history tool \| LifeMapper \| Point map

Special reports
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Summary page \| Point data \| Common names \| Photos

Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

Medium, minimum population doubling time 1.4 - 4.4 years (K=0.16)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Moderate to high vulnerability (49 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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