Ecology of Nomeus gronovii
 
Main Ref. Haedrich, R.L., 1986
Remarks Large numbers occur in association with floating Physalia, casually swimming in and out of the tentacles and sheltering under the bell. Feeds on the tentacles and gonads of Physalia, probably other soft-bodied jellyfishes as well, also zooplankton. The mottled color pattern of the fish closely mimics the bunched and retracted tentacles. The fish is relatively immune to the toxin of the siphonophore, but none the less is on occasion killed and eaten by its host (Ref. 4777).

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 Nomeus gronovii 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. Haedrich, R.L., 1986
Feeding habit selective plankton feeding
Feeding habit Ref. Haedrich, R.L., 1986
Trophic Level(s)
Estimation method Original sample Unfished population Remark
Troph s.e. Troph s.e.
From diet composition
From individual food items 3.67 0.38 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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