Ecology Summary - Auchenipterus nuchalis

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Main Ref.	Boujard, T., M. Pascal, F.J. Meunier and P.-Y. Le Bail, 1997
Remarks	Inhabits lower courses of the larger rivers. Free swimming species found near the surface. Nocturnal, plus active during dusk and dawn. The male is recognizable by his thick, ossified maxillary barbels and by the first few rays of the anal fin which are fused, supporting the urogenyla tube that runs along the anterior border to the tip of the rays (Ref. 6868). Feeds mainly on insects and some crustaceans and fish (Ref. 27188).

Main Ref.

Boujard, T., M. Pascal, F.J. Meunier and P.-Y. Le Bail, 1997

Remarks

Inhabits lower courses of the larger rivers. Free swimming species found near the surface. Nocturnal, plus active during dusk and dawn. The male is recognizable by his thick, ossified maxillary barbels and by the first few rays of the anal fin which are fused, supporting the urogenyla tube that runs along the anterior border to the tip of the rays (Ref. 6868). Feeds mainly on insects and some crustaceans and fish (Ref. 27188).

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 Auchenipterus nuchalis 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.	Boujard, T., M. Pascal, F.J. Meunier and P.-Y. Le Bail, 1997
Feeding habit	hunting macrofauna (predator)
Feeding habit Ref.	Mérona, B. de and J. Rankin-de-Mérona, 2004

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	3.63	0.51			Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.

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