Ecology Summary - Carapus acus
Ecology of Carapus acus
 
Main Ref. Nielsen, J.G., D.M. Cohen, D.F. Markle and C.R. Robins, 1999
Remarks Adults typically live as commensals in the gut of shallow-water holothurians, Holothuria tubulosa and Stichopus regalis (although some deep-water records exist - Ref. 6347). Prejuveniles (tenuis larvae) probably inhabit the same host species while the vexillifer and egg-rafts are planktonic. The fish may partly protrude or entirely leave its host at night to feed on small fish and benthic invertebrates.

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 Carapus acus may be found.

Habitat

Substrate
Substrate Ref.
Special habitats
Special habitats Ref.

Associations

Ref. Nielsen, J.G., D.M. Cohen, D.F. Markle and C.R. Robins, 1999
Associations solitary; symbiosis;
Associated with
Association remarks
Parasitism

Feeding

Feeding type mainly animals (troph. 2.8 and up)
Feeding type Ref. Nielsen, J.G., D.M. Cohen, D.F. Markle and C.R. Robins, 1999
Feeding habit feeding on the prey of a host (commensal)
Feeding habit Ref. Nielsen, J.G., D.M. Cohen, D.F. Markle and C.R. Robins, 1999
Trophic Level(s)
Estimation method Original sample Unfished population Remark
Troph s.e. Troph s.e.
From diet composition
From individual food items 4.04 0.63 Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.
(e.g. 9948)
(e.g. oophagy)
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