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Common name (e.g. trout)
Genus + Species (e.g. Gadus morhua)
Classification / Names
| Catalog of Fishes (
Actinopterygii (ray-finned fishes) >
(Driftwood catfishes) > Auchenipterinae
Greek, trachelos = neck + greek, pteron = wing, fin (Ref.
. More on author:
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal; pH range: 6.0 - 7.5; dH range: ? - 18. Tropical; 20°C - 24°C (Ref.
South America: Widespread in northern South America.
Length at first maturity / Size / Weight / Age
range ? - ? cm
Max length : 30.0 cm TL male/unsexed; (Ref.
); 23.0 cm TL (female); max. published weight: 675.00 g (Ref.
); max. published weight: 675.00 g; max. reported age: 3 years (Ref.
: 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.
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.
). 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.
Life cycle and mating behavior
Ferraris, C.J. Jr.
, 2003. Auchenipteridae (Driftwood catfishes). p. 470-482. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref.
IUCN Red List Status (Ref.
Threat to humans
Fisheries: minor commercial; aquarium: commercial
Stamps, Coins Misc.
Check for Aquarium maintenance
Check for Species Fact Sheets
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Alien/Invasive Species database
Websites from users
Catalog of Fishes
| IGFA World Record |
Otolith Atlas of Taiwan Fishes
| Reef Life Survey |
Tree of Life
) | World Records Freshwater Fishing |
Estimates of some properties based on models
Phylogenetic diversity index (Ref.
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01738 (0.01327 - 0.02276), b=3.05 (2.97 - 3.13), in cm Total Length, based on LWR estimates for this species (Ref.
Trophic Level (Ref.
): 3.1 ±0.40 se; Based on food items.
): High, minimum population doubling time less than 15 months (tmax=3).
): Low to moderate vulnerability (31 of 100) .
Price category (Ref.
Binohlan, Crispina B.
Reyes, Rodolfo B.
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