Gymnotus arapaima Albert & Crampton, 2001

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

Classification	Actinopterygii \| Gymnotiformes \| Gymnotidae
Synonyms	... more
Common names	... more

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Main reference

Albert, J.S. and W.G.R. Crampton. 2001. (Ref. 41292)
Other references | Biblio | Coordinator : Campos-da-Paz, Ricardo | Collaborators

Size / Weight / Age

Max length : 55.0 cm TL male/unsexed; (Ref. 41292); max. published weight: 450 g (Ref. 41292)

Environment

Demersal; freshwater; pH range: 6.3 - 7.2

Climate / Range

Subtropical

South America: Mamirauá lake system, Lago Tefé, and terra firme swamps near the town of Tefé in Central Amazonia.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Possess reverse counter shading (lighter on top) in which the dark bands are interrupted dorsally and the pale interband regions merge on the dorsum and in which the dorsum has a silver-blue sheen in life, and very large anterior nares (diameter about that of eye), associated with a large cleft in the anterolateral margin of the ethmoid region resulting in a square anterior margin of snout between the anterior nares. With deep body (body depth 11-13% TL versus 6-10): long head (head length 12.7-13.6% TL versus 8.8-12.6), and depressed head (head depth 53-57% TL versus 58-64) (Ref. 41292).

Juveniles commonly collected in várzea floating meadows, adults in várzea flooded forest but rarely caught in floating meadows where they are presumed to spawn.


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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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 (Preliminary K or Fecundity.)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Moderate vulnerability (38 of 100)	Not marketed/unknown

Entered by Casal, Christine Marie V.

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Page last modified by : elaxamana, 15 July 2009

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