About This Fish


The snook (Centropomus undecimalis) is a marine fish in the family Centropomidae under order Perciformes of class Actinopterygii. It is also known as the common snook, Saltwater Pike, the sergeant fish or robalo. It is distributed in the coastal waters of the western Atlantic Ocean and Caribbean Sea, southern Florida and Texas, Rio de Janeiro, Brazil. It is an amphidromous fish which moves between fresh and salt water during the life. It commonly associates with underwater structures such as pilings, reefs or sea grass beds, but it often prefers mangrove-fringed estuarine habitats.

Snook have elongated bodies and a distinct sloping forehead. Snout is concave with protruding lower jaw. The lateral line is pigmented and distinct which runs from operculum to the base of the caudal fin. Coloration ranges from dark brown on back to silvery on the sides and white below. The pectoral fin, pelvic fin, second dorsal fin and the dorsal lobe of the caudal fin are all bright yellow in color. It has two dorsal fins that are well-separated each with 8-9 spines and 10 soft rays. The anal fin contains 3 spines and 6 soft rays. The pectoral fin consists of 15-6 rays and it does not reach tip of the pelvic fin. It is opportunistic carnivore which primarily feeds on other pelagic fish and crustaceans such as shrimps, and occasionally crabs while the juvenile’s diet primarily consists of palaemonid shrimp, microcrustaceans, copepods and mosquitofish. The juvenile is preyed upon by dolphins, fish-eating birds such as osprey and herons and larger species of fish. It spawns during the period from May to September. It grows to a maximum 140 cm in length and 24 kg in weight. It can live up to 20 years.

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Location Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Costa Rica
St Maarten