Rhamdia quelen (Quoy & Gaimard, 1824)

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

Classification	Actinopterygii \| Siluriformes \| Heptapteridae
Synonyms	Pimelodus quelen, Caecorhamdia urichi, Pimelenotus vilsoni, ... more
Common names	South American catfish, Guatemalan chulín, Pale catfish, ... more

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Picture by Galvis, G./Mojica, J.I./Camargo, M.

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Main reference

Bockmann, F.A. and G.M. Guazzelli. 2003. (Ref. 36914)
Other references | Biblio | Coordinator : Bockmann, Flavio | Collaborators

Size / Weight / Age

Max length : 47.4 cm TL male/unsexed; (Ref. 79585); max. published weight: 4,020 g (Ref. 40637)

Environment

Benthopelagic; freshwater; pH range: ? - 7.0; depth range 0 - 3 m (Ref. 35381)

Climate / Range

Tropical; 22°C - 28°C (Ref. 2060)

Central and South America: Mexico to central Argentina.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Occurs in littoral creeks, over sandy bottoms covered with dead leaves (Ref. 27188). Inhabits also lakes and rivers, but seems to prefer rivers with a very slight current (Ref. 6868). Prefers a muddy bottom covered with leaves and decaying wood, the latter providing for hiding places during the day (Ref. 35381). Feeds on fish and insects (Ref. 27188), benthic zooplankton and crustaceans (Ref. 35381). Omnivorous (Ref. 79585). Mainly nocturnal (Ref. 11225). Possesses poisonous spiny rays. Its sex ratio is 2:1 in favor of females. The male's reproductive apparatus includes multi-lobed testicles and accessory organs for secretion and storage. Fertilization is external. Non-sticking demersal eggs (1.1 to 2.8 mm diameter) are laid down, hatching after about 48 hours at 22°C. Ten days later, the larvae weigh approximately 100 mg but growth is slow (0.5 to 1.15 g per day).


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

Human uses
Fisheries: minor commercial; aquaculture: 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 \| Length-frequency wizard \| Life-history tool \| LifeMapper \| Point map

Special reports
Check for Aquarium maintenance \| Check for Species Fact Sheets \| Check for Aquaculture Fact Sheets

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

Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Low vulnerability (24 of 100)	Not marketed/unknown

Entered by Torres, Armi G.

Modified by Torres, Armi G.

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Page last modified by : elaxamana, 15 July 2009

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