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Ecology of Hydrolagus affinis
 
Main Ref. Hardy, G.S. and M. Stehmann, 1990
Remarks Found on continental slopes and down to deep-sea plains. Feeds on small fishes and invertebrates (Ref. 3330). Epibenthic or bottom benthopelagic. Dwells in rarity from coastal margins and off bottoms. Associated with deep, cold-water coral reefs. Feeds mainly on benthic and epibenthic invertebrates, suggesting active hunting behavior. Possibly nocturnal. Oviparous (Ref. 117245).

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 Hydrolagus affinis may be found.

Habitat

Substrate Benthic; Pelagic;
Substrate Ref. Coad, B.W. and J.D. Reist, 2018
Special habitats Other habitats: deep-water corals;
Special habitats Ref.

Associations

Ref.
Associations
Associated with
Association remarks Parasites of the species include Gryrocotyle abyssicola and Gryrocotyle major (cestodes), and Lernaeopodina longibrachia (copepod) (Ref. 5951).
Parasitism

Feeding

Feeding type mainly animals (troph. 2.8 and up)
Feeding type Ref. Stehmann, M. and D.L. Bürkel, 1984
Feeding habit hunting macrofauna (predator)
Feeding habit Ref. Stehmann, M. and D.L. Bürkel, 1984
Trophic Level(s)
Estimation method Original sample Unfished population Remark
Troph s.e. Troph s.e.
From diet composition
From individual food items 4.25 0.41 Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.
(e.g. 346)
(e.g. oophagy)
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