Ecology of Umbra pygmaea
Main Ref. Page, L.M. and B.M. Burr, 1991
Marine - Neritic
  • supra-littoral zone
  • littoral zone
  • sublittoral zone
Marine - Oceanic
  • 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 Umbra pygmaea may be found.
Remarks Occur in quiet streams, sloughs, swamps and other wetlands over sand, mud and debris, often among dense vegetation. Juveniles also found among aquatic vegetation, often forming schools of 10-12 individuals (Ref. 39069). Wide range of occurrence with respect to the pH of the water, the habitats are characterized by low alkalinity and ionic content (Ref. 59260). Feeds on insect larvae, worms, mollusks, and crustaceans (Ref. 30578).


Substrate Soft Bottom: sand; mud;
Substrate Ref.
Special habitats vegetation
Special habitats Ref.


Ref. Gordon, M.S., 1948
Associations schooling;
Associated with
Association remarks


Feeding type mainly animals (troph. 2.8 and up)
Feeding type ref Billard, R., 1997
Feeding habit variable
Feeding habit ref
Trophic level(s)
Original sample Unfished population Remark
Estimation method Troph s.e. Troph s.e.
From diet composition
From individual food items 3.25 0.39 Trophic level estimated from a number of food items using a randomized resampling routine.
(e.g. 346)
(e.g. cnidaria)
Entered by Sa-a, Pascualita on 09.20.99
Modified by Pablico, Grace Tolentino on 11.16.07
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