Ecology of Rhamdia quelen
 
Main Ref. Castro, R.M.C. and L. Casatti, 1997
Remarks Ratio of digestive tube length/standard length: 1.1. Feeds mainly on insects (Ref. 28681). When feeding, they use their barbels to search for prey on the bottom, although they don't turn over the substrate (Ref. 27701).

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
  • estuaries/lagoons/brackish seas
  • mangroves
  • marshes/swamps
  • rivers/streams
  • lakes/ponds
  • caves
  • exclusively in caves
Highighted items on the list are where Rhamdia quelen may be found.

Habitat

Substrate
Substrate Ref.
Special habitats
Special habitats Ref.

Associations

Ref.
Associations
Associated with
Association remarks
Parasitism

Feeding

Feeding type mainly animals (troph. 2.8 and up)
Feeding type Ref. Castro, R.M.C. and L. Casatti, 1997
Feeding habit hunting macrofauna (predator)
Feeding habit Ref. Mérigoux, S. and D. Ponton, 1998
Trophic Level(s)
Estimation method Original sample Unfished population Remark
Troph s.e. Troph s.e.
From diet composition 3.92 0.26 3.15 0.40 Troph of juv./adults from 2 studies.
From individual food items 3.34 0.49 Trophic level estimated from a number of food items using a randomized resampling routine.
Ref. Castro, R.M.C. and L. Casatti, 1997
(e.g. 346)
(e.g. oophagy)
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