Ecology Summary - Johnius borneensis
Ecology of Johnius borneensis
 
Main Ref. Sumpton, W. and J. Greenwood, 1990
Remarks Inhabits shallow coastal waters, estuaries, and rivers. In India, matures at the size of 14 to 16 cm TL; attains an average size of 15.8 cm TL, 20.6 cm TL, and 24 cm TL, at the end of 1 year, 1.5 years and 2 years, respectively. Juvenile feeds mainly on zooplankton (Ref. 13441), and as they grow, show piscivorous tendency (Ref. 9772). Benthopelagic (Ref. 129051).

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 Johnius borneensis may be found.

Habitat

Substrate Benthic; Pelagic;
Substrate Ref. Soe, K.K., S. Pradit and S. Hajisamae, 2021
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. Sumpton, W. and J. Greenwood, 1990
Feeding habit selective plankton feeding
Feeding habit Ref.
Trophic Level(s)
Estimation method Original sample Unfished population Remark
Troph s.e. Troph s.e.
From diet composition 3.66 0.41 Troph of juv./adults.
From individual food items 3.77 0.49 Trophic level estimated from a number of food items using a randomized resampling routine.
Ref. Soe, K.K., S. Pradit and S. Hajisamae, 2021
(e.g. 346)
(e.g. oophagy)
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