Ecology Summary - Roeboides descalvadensis

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Main Ref.	Sazima, I. and F.A. Machado, 1982
Remarks	Found in inlets and backwaters of rivers and streams. Forages mostly at twilight, stalking larger fishes to feed on their scales. Approaches its intended prey stealthily and usually aims at its flank. Strikes mostly with its mouth closed, dislodging the scales with its stout, external and forward-directed teeth. The jarring strike dislodges a few scales which are swallowed immediately if taken in the mouth, or gathered as they sink. Also feeds on aquatic insects (Ref. 40383). Food dominated by zooplankton (Ref. 56181).

Main Ref.

Sazima, I. and F.A. Machado, 1982

Remarks

Found in inlets and backwaters of rivers and streams. Forages mostly at twilight, stalking larger fishes to feed on their scales. Approaches its intended prey stealthily and usually aims at its flank. Strikes mostly with its mouth closed, dislodging the scales with its stout, external and forward-directed teeth. The jarring strike dislodges a few scales which are swallowed immediately if taken in the mouth, or gathered as they sink. Also feeds on aquatic insects (Ref. 40383). Food dominated by zooplankton (Ref. 56181).

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 Roeboides descalvadensis may be found.

Habitat

Substrate
Substrate Ref.
Special habitats
Special habitats Ref.

Associations

Fonte Biblio.
Associations
Associated with
Association remarks
Parasitism

Feeding

Feeding type	mainly animals (troph. 2.8 and up)
Feeding type Ref.	Pelicice, F.M. and A.A. Agostinho, 2006
Feeding habit
Feeding habit Ref.

Trophic Level(s)

Estimation method	Original sample		Unfished population		Commento
Estimation method	Troph	s.e.	Troph	s.e.	Commento
From diet composition
From individual food items	3.33	0.46			Trophic level estimated from a number of food items using a randomized resampling routine.
Fonte Biblio.

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