Ecology Summary - Ilisha megaloptera

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Main Ref.	Whitehead, P.J.P., 1985
Remarks	Apparently occurs also in rivers (Ganges - see Wongratana, 1980), but not in Vellar estuary (Ramaiyan and Whitehead, 1975); Day (1875) referred to Pellona motius (if this was indeed the present species) as riverine, 'descending as low as the coast' and gave its size as not much over 4 inches, i.e. about 10 cm standard length; this would suggest that I. megaloptera ascends and spawns in rivers (Ref. 188). Juveniles and/or adults are found in mangrove creeks, inlets, subtidal edge of mud flats, near inshore and far inshore waters (Ref. 121464). Feeds on fish, plants and benthic invertebrates (Ref. 188).

Main Ref.

Whitehead, P.J.P., 1985

Remarks

Apparently occurs also in rivers (Ganges - see Wongratana, 1980), but not in Vellar estuary (Ramaiyan and Whitehead, 1975); Day (1875) referred to Pellona motius (if this was indeed the present species) as riverine, 'descending as low as the coast' and gave its size as not much over 4 inches, i.e. about 10 cm standard length; this would suggest that I. megaloptera ascends and spawns in rivers (Ref. 188). Juveniles and/or adults are found in mangrove creeks, inlets, subtidal edge of mud flats, near inshore and far inshore waters (Ref. 121464). Feeds on fish, plants and benthic invertebrates (Ref. 188).

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 Ilisha megaloptera may be found.

Habitat

Substrate	Soft Bottom: mud;
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.	Whitehead, P.J.P., 1985
Feeding habit	hunting macrofauna (predator)
Feeding habit Ref.	Whitehead, P.J.P., 1985

Trophic Level(s)

Estimation method	Original sample		Unfished population		Remark
Estimation method	Troph	s.e.	Troph	s.e.	Remark
From diet composition
From individual food items	3.04	0.37			Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.

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