Ecology of Psalidodon rivularis
 
Main Ref. Casatti, L. and R.M.C. Castro, 1998
Remarks Ratio of digestive tube length/standard length is 1.2. Collects food items from drifting current and sometimes trims submerged roots of Poaceae or algae attached to rocks. When collecting items carried by the current, the fish swims upstream orientated, either in the middle of the water column, or at the margins or downstream from rocks (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 Psalidodon rivularis may be found.

Habitat

Substrate
Substrate Ref.
Special habitats
Special habitats Ref.

Associations

Ref.
Associations
Associated with
Association remarks
Parasitism

Feeding

Feeding type plants/detritus+animals (troph. 2.2-2.79)
Feeding type Ref. Casatti, L. and R.M.C. Castro, 1998
Feeding habit
Feeding habit Ref.

Trophic Level(s)

Estimation method Original sample Unfished population Remark
Troph s.e. Troph s.e.
From diet composition
From individual food items 2.72 0.36 Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.
(e.g. 346)
(e.g. cnidaria)
Entered by Sa-a, Pascualita on 11.13.02
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