Ecology of Gymnocranius grandoculis
 
Main Ref. Carpenter, K.E. and G.R. Allen, 1989
Remarks Inhabit offshore reefs (Ref. 9710), trawling grounds of the continental shelves and offshore rocky bottoms (Ref. 30573). Juveniles inshore on muddy substrates (Ref. 48635). Feed mostly on bottom invertebrates and small fishes (Ref. 30573).

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 Gymnocranius grandoculis may be found.

Habitat

Substrate Soft Bottom: sand; Hard Bottom: rocky;
Substrate Ref. Broad, G., 2003
Special habitats Coral Reefs;
Special habitats Ref. Letourneur, Y., P. Chabanet, P. Durville, M. Taquet, E. Teissier, M. Parmentier, J.-C. Quéro and K. Pothin, 2004

Associations

Ref.
Associations
Associated with
Association remarks
Parasitism

Feeding

Feeding type mainly animals (troph. 2.8 and up)
Feeding type Ref. Carpenter, K.E. and G.R. Allen, 1989
Feeding habit hunting macrofauna (predator)
Feeding habit Ref. Carpenter, K.E. and G.R. Allen, 1989
Trophic Level(s)
Estimation method Original sample Unfished population Remark
Troph s.e. Troph s.e.
From diet composition 3.76 3.38 0.42 Troph of adults from 1 study.
From individual food items 3.98 0.63 Trophic level estimated from a number of food items using a randomized resampling routine.
Ref. Kulbicki, M., Y.-M. Bozec, P. Labrosse, Y. Letourneur, G. Mou-Tham and L. Wantiez, 2005
(e.g. 346)
(e.g. oophagy)
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