Ecology Summary - Horabagrus brachysoma

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Main Ref.	Gopalakrishnan, A. and A.G. Ponniah, 2000
Remarks	Found in backwaters. Crustaceans were the most important prey items. Feeding specificity underwent moderate ontogenetic changes. The diet of fingerlings (<10 cm) mainly crustaceans was reduced with increasing size (Ref. 78456). Adult consumed a broad variety of food items including the bones of frogs and terrestrial insects (Ref. 78456). Increase in feeding intensity was noted in Lake Vembanad, south India from September to December (post-monsoon) with a reduced rate from May to July (monsoon) (Ref. 78456).

Main Ref.

Gopalakrishnan, A. and A.G. Ponniah, 2000

Remarks

Found in backwaters. Crustaceans were the most important prey items. Feeding specificity underwent moderate ontogenetic changes. The diet of fingerlings (<10 cm) mainly crustaceans was reduced with increasing size (Ref. 78456). Adult consumed a broad variety of food items including the bones of frogs and terrestrial insects (Ref. 78456). Increase in feeding intensity was noted in Lake Vembanad, south India from September to December (post-monsoon) with a reduced rate from May to July (monsoon) (Ref. 78456).

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 Horabagrus brachysoma 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.	Sreeraj, N., R. Raghavan and G. Prasad, 2006
Feeding habit	hunting macrofauna (predator)
Feeding habit Ref.	Sreeraj, N., R. Raghavan and G. Prasad, 2006

Trophic Level(s)

Estimation method	Original sample		Unfished population		Remark
Estimation method	Troph	s.e.	Troph	s.e.	Remark
From diet composition	3.09				Troph of adults from 1 study.
From individual food items	3.30	0.49			Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.	Sreeraj, N., R. Raghavan and G. Prasad, 2006

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