Écologie de Wallago attu
 
Réf. Princ. Roberts, T.R., 1993
Remarques Found in large rivers, lakes and tanks. A large, voracious and predatory catfish which thrives in heels with grassy margin (Ref. 6028); mostly hides under holes in river banks and canals (Ref. 44149). Associated with deep, still or slow-flowing water with a mud or silt substrate (Ref. 6028). Sluggish and stays on muddy or silty bottom in search of food. Juveniles feed mainly on insects; adults feed on smaller fish, crustaceans, and mollusks. Abundant during the warm season; a pre-monsoon summer breeder. In the Mekong, it is reported to migrate to smaller streams, canals and to the floodplain during the flood season (Ref. 37770). When the water level in the Mekong drops and the flood recedes, it moves to the Mekong or larger tributaries, where it stays in deep pools until the next inundation period (Ref. 37770). Destructive to other more valuable food-fishes. Bites strongly if handled, with its huge mouth, formidable jaws, and band of conical teeth.

Aquatic zones / Water bodies

Marine - Neritic Marine - Oceanic Brackishwater Freshwater
Marine zones / Brackish and freshwater bodies
  • supra-littoral zone
  • littoral zone
  • sublittoral zone
  • epipelagic
  • mesopelagic
  • epipelagic
  • abyssopelagic
  • hadopelagic
  • Estuaires/lagons/zones saumâtres
  • mangroves
  • marais
  • rivers/streams
  • lakes/ponds
  • Grottes
  • exclusivement
Highighted items on the list are where Wallago attu may be found.

Habitat

Substrat
Substrate Ref.
Habitats spéciaux
Special habitats Ref.

Associations

Réf.
Associations
Associé avec
Remarques sur les associations
Parasitisme

Prise alimentaire

Type de prise alimentaire mainly animals (troph. 2.8 and up)
Feeding type Ref. Lim, P., S. Lek, S.T. Touch, S.-O. Mao and B. Chhouk, 1999
Habitude alimentaire hunting macrofauna (predator)
Feeding habit Ref. Roberts, T.R., 1993
Trophic Level(s)
Estimation method Échantillon original Population non pêchée Remarque
Troph s.e. Troph s.e.
À partir du régime alimentaire
À partir des éléments alimentaires 3.68 0.56 Trophic level estimated from a number of food items using a randomized resampling routine.
Réf.
(ex. 346)
(ex. cnidaria)
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