Ecology of Macquaria australasica
Main Ref. Merrick, J.R. and G.E. Schmida, 1984
Remarks Once widely distributed and abundant now restricted to temperate upper reaches of distribution range and in 1971 was considered a seriously threatened species. Siltation is the apparent cause of this decline. Juveniles are zooplanktivores, ingesting water fleas, rotifers and water mites with a sucking action. Peaceful community fish.

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 Macquaria australasica may be found.


Substrate Ref.
Special habitats
Special habitats Ref.


Associated with
Association remarks


Feeding type mainly animals (troph. 2.8 and up)
Feeding type Ref. Merrick, J.R. and G.E. Schmida, 1984
Feeding habit sucking food-containing material
Feeding habit Ref. Merrick, J.R. and G.E. Schmida, 1984
Trophic Level(s)
Estimation method Original sample Unfished population Remark
Troph s.e. Troph s.e.
From diet composition
From individual food items 3.25 0.01 Trophic level estimated from a number of food items using a randomized resampling routine.
(e.g. 346)
(e.g. cnidaria)
Entered by Palomares, Maria Lourdes D. on 08.09.94
Modified by Miranda, Lilibeth on 10.29.01
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