>
Siluriformes (Catfishes) >
Auchenipteridae (Driftwood catfishes) > Auchenipterinae
Etymology: Trachelyopterus: Greek, trachelos = neck + greek, pteron = wing, fin (Ref. 45335).
More on author: Linnaeus.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bottenlevande; pH range: 6.0 - 7.5; dH range: ? - 18. Tropical; 20°C - 24°C (Ref. 2060)
South America: Widespread in northern South America.
Längd vid första mognad / Storlek / Vikt / Ålder
Könsmognad: Lm 10.8  range ? - ? cm
Max length : 30.0 cm TL hane/ej könsbestämd; (Ref. 115169); 23.0 cm TL (female); publicerad maxvikt: 675.00 g (Ref. 115169); publicerad maxvikt: 675.00 g; rapporterad maxålder: 3.00 år (Ref. 35381)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 1; Mjukstrålar i ryggfenan (totalt) : 5 - 6; Taggstrålar i analfenan: 0; Mjukstrålar i analfenan: 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).
Body shape (shape guide): fusiform / normal.
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).
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. 37098)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Fiskeri: mindre kommeriell; Akvarium: Kommersiell
Verktyg
Särskilda rapporter
Ladda ner XML
Internet-källor
Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
|
Bayesian length-weight
|
a=0.01479 (0.01168 - 0.01873), b=3.10 (3.03 - 3.17), in cm total length, based on LWR estimates for this species (Ref. 93245). |
Trofisk nivå (Ref. 69278) |
3.1 ±0.40 se; based on food items. |
Resiliens (Ref. 120179) |
Hög, lägsta populationsfördubblingstid mindre än 15 månader (tmax=3). |
Sårbarhet i fisket (Ref. 59153) |
Low to moderate vulnerability (31 of 100). 🛈 |
Priskategori (Ref. 80766) |
Unknown.
|