Ecology Summary

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Ecology of Tor tor

Main Ref.	Bisht, R.S. and S.M. Das, 1981
Remarks	Inhabit rivers and lakes, also in rapid streams with rocky bottom (Ref. 41236). Grow better in a river with a rocky bottom. Travel toward headwaters at the start of the rainy season and downstream at the end of the rainy season. Bottom feeder (Ref. 58486). Omnivorous, feed on filamentous algae, chironomid larvae, water beetles and crustaceans. Also feeds on plants and benthic invertebrates (Ref. 13633). Diet of sahar larvae indicated that as they grew older larger zooplanktons were ingested progressively (Ref. 41840). Feeding intensity was poor during breeding season (Ref. 56213, 58486). The feeding improved after breeding and peaked in January to February in Narmada River. The feeding activities declined with the progressive maturation of gonads from March to April (Ref. 58486).

Main Ref.

Bisht, R.S. and S.M. Das, 1981

Remarks

Inhabit rivers and lakes, also in rapid streams with rocky bottom (Ref. 41236). Grow better in a river with a rocky bottom. Travel toward headwaters at the start of the rainy season and downstream at the end of the rainy season. Bottom feeder (Ref. 58486). Omnivorous, feed on filamentous algae, chironomid larvae, water beetles and crustaceans. Also feeds on plants and benthic invertebrates (Ref. 13633). Diet of sahar larvae indicated that as they grew older larger zooplanktons were ingested progressively (Ref. 41840). Feeding intensity was poor during breeding season (Ref. 56213, 58486). The feeding improved after breeding and peaked in January to February in Narmada River. The feeding activities declined with the progressive maturation of gonads from March to April (Ref. 58486).

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 Tor tor may be found.

Habitat

Substrate
Substrate Ref.
Special habitats
Special habitats Ref.

Associations

Ref.
Associations
Associated with
Association remarks
Parasitism

Feeding

Feeding type	plants/detritus+animals (troph. 2.2-2.79)
Feeding type Ref.	Bisht, R.S. and S.M. Das, 1981
Feeding habit	other
Feeding habit Ref.

Trophic Level(s)

Estimation method	Original sample		Unfished population		Remark
Estimation method	Troph	s.e.	Troph	s.e.	Remark
From diet composition	2.63	0.09	2.53	0.14	Troph of juv./adults from 3 studies.
From individual food items	3.02	0.38			Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.	Desai, V.R., 1970

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