Ecology of Serrasalmus rhombeus
Main Ref. Goulding, M., 1980
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 Serrasalmus rhombeus may be found.
Remarks Forms schools. Mainly diurnal (Ref. 9096). Occurs in the rapids but is also captured in deep zones of main rivers with the use of fish bait. Is essentially a carnivore, feeds on small fish, crabs, mammals, lizards and coleopteran insects. Its opportunistic behavior allows it to adapt to various biotopes (Ref. 12225). It is timid and not aggressive but it possesses powerful dentition that can cause serious bites, and is therefore, potentially dangerous.


Substrate Ref.
Special habitats
Special habitats Ref.


Associated with
Association remarks


Feeding type mainly animals (troph. 2.8 and up)
Feeding type ref Goulding, M., 1980
Feeding habit hunting macrofauna (predator)
Feeding habit ref Goulding, M., 1980
Trophic level(s)
Original sample Unfished population Remark
Estimation method Troph s.e. Troph s.e.
From diet composition 4.03 0.44 3.89 0.57 Troph of juv./adults from 2 studies.
Ref. Goulding, M., 1980
From individual food items 3.57 0.59 Trophic level estimated from a number of food items using a randomized resampling routine.
(e.g. 346)
(e.g. cnidaria)
Entered by Palma Gonzales, Carlos on 04.17.95
Modified by Pablico, Grace Tolentino on 06.25.08
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