Trachelyopterus galeatus (Linnaeus, 1766)

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

Classification	Actinopterygii \| Siluriformes \| Auchenipteridae \| Auchenipterinae
Synonyms	Silurus galeatus, Parauchenipterus galeatus, Pseudauchenipterus galeatus, ... more
Common names	Auchéniptère tacheté, Bagre, Novia cunchi, ... more

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Picture by Mikolji, I.

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Main reference

Ferraris, C.J. Jr. 2003. (Ref. 37098)
Other references | Biblio | Coordinator : Ferraris, Jr., Carl J. | Collaborators

Size / Weight / Age

Max length : 22.0 cm SL male/unsexed; (Ref. 37098); max. reported age: 3 years (Ref. 35381)

Environment

Demersal; freshwater; pH range: 6.0 - 7.5; dH range: ? - 18

Climate / Range

Tropical; 20°C - 24°C (Ref. 2060)

South America: Widespread in northern South America.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 1; Dorsal soft rays (total): 5 - 6; Anal spines: 0; Anal soft rays: 20 - 25. The body is stocky, the head a little depressed, the inferior jaw a little prognathous, the cephalic helmet covered with finely pigmented skin in adults, with a fontanelle shorter than the orbital diameter (Ref. 35381).

Occurs in swamps. Well-adapted to hypoxic environments, being able to survive for hours, emerged. Adults feed on small fishes, arthropods, worms and sometimes on fruits (Ref. 35381). The spiny structure of the pectoral fins enables the male to hold the females during mating (internal fertilization). Sperm can be kept in the female's genital tract for several months, owing to a gelatinous emission from the seminal vesicle of the male. At maturity, the size of the adhesive eggs (20% of the female's weight) is 3 mm. Nine days after hatching, alevin size is 1.5 cm and they feed on microscopic worms or small insects. At around 11 days, their negative phototropism pushes them to hide themselves under branches or rocks. Its pink flesh is highly appreciated by the local population (Ref. 27188).


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

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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 (17 of 100)	Not marketed/unknown

Entered by Binohlan, Crispina B.

Modified by Torres, Armi G.

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Page last modified by : elaxamana, 15 July 2009

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