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Ecology of Polyodon spathula
 
Main Ref. Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott, 1991
Remarks Inhabits slow-flowing water of large rivers, usually in water deeper than 1.3 m. Feeds on plankton. The extended upper jaw (= paddle) may help to channel plankton into the mouth. Fish larger than 22.5 cm SL are indiscriminate tow-net filter feeders on plankton, while young paddlefish are selective plankton feeders (Ref. 46977).

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 Polyodon spathula 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. Rosen, R.A. and D.C. Hales, 1981
Feeding habit filtering plankton
Feeding habit Ref. Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott, 1991
Trophic Level(s)
Estimation method Original sample Unfished population Remark
Troph s.e. Troph s.e.
From diet composition
From individual food items 3.40 0.45 Tentative trophic level derived from 1 + troph of a single food item
Ref. Rosen, R.A. and D.C. Hales, 1981
(e.g. 346)
(e.g. cnidaria)
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