Ecology Summary - Archosargus rhomboidalis

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Main Ref.	Chavance, P., A. Yañez-Arancibia, D. Flores-Hernández, A.L. Lara-Domínguez and F.A. Linares, 1986
Remarks	Commonly found over mud bottoms in mangrove sloughs and on vegetated sand bottoms, sometimes in brackish water and occasionally also in coral reef areas near mangroves. Feeds on benthic invertebrates (small bivalves, crustaceans), as well as on plant material. Diet were related to size of mouth, change in dentition and habitat. Molariform teeth are nonfunctional in 40 cm SL fishes but are firmly established at 7 cm SL. From 8 cm SL (length at maturity) to 16 cm the fish is omnivorous (Ref. 57616) and demersal in seagrass beds. Above 16 cm SL the fish is 91% carnivorous and demersal in tidal channels (Ref. 42268).

Main Ref.

Chavance, P., A. Yañez-Arancibia, D. Flores-Hernández, A.L. Lara-Domínguez and F.A. Linares, 1986

Remarks

Commonly found over mud bottoms in mangrove sloughs and on vegetated sand bottoms, sometimes in brackish water and occasionally also in coral reef areas near mangroves. Feeds on benthic invertebrates (small bivalves, crustaceans), as well as on plant material. Diet were related to size of mouth, change in dentition and habitat. Molariform teeth are nonfunctional in 40 cm SL fishes but are firmly established at 7 cm SL. From 8 cm SL (length at maturity) to 16 cm the fish is omnivorous (Ref. 57616) and demersal in seagrass beds. Above 16 cm SL the fish is 91% carnivorous and demersal in tidal channels (Ref. 42268).

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 Archosargus rhomboidalis may be found.

Habitat

Substrate	Soft Bottom
Substrate Ref.
Special habitats	Beds: sea grass; Coral Reefs;
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.	Chavance, P., A. Yañez-Arancibia, D. Flores-Hernández, A.L. Lara-Domínguez and F.A. Linares, 1986
Feeding habit	variable
Feeding habit Ref.	Dominici-Arosemena, A. and M. Wolff, 2005

Trophic Level(s)

Estimation method	Original sample		Unfished population		Remark
Estimation method	Troph	s.e.	Troph	s.e.	Remark
From diet composition	2.89	0.11	2.33	0.18	Troph of juv./adults from 2 studies.
From individual food items	3.06	0.39			Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.	Randall, J.E., 1967

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