About This Fish

White Sea Bass


The white seabass (Atractoscion nobilis) is also known as white weakfish which belongs to the family Sciaenidae under order Perciformes of class Actinopterygii. The white seabass is found along the Pacific coastline from Alaska to Baja California and in the Gulf of California. It forms schools over rocky bottom and in kelp beds. It is also found in the surf zone while the young occurs in bays and along sandy beaches.



The white seabass is elongated and somewhat compressed. The color is bluish to gray above with dark speckling and silvery below. The young contains several dark vertical bars. The head is pointed and slightly compressed. The mouth is large with relatively small teeth. The lower jaw is marginally longer than the upper jaw. It has two dorsal fins; the anterior dorsal fin contains 9 to 11 spines and the posterior dorsal fin with one spine and several soft rays. Anal fin contains 2 spines and 9-10 soft rays. Pelvic fin is thoracic which is located slightly posterior to the pectoral fin. Caudal fin is straight to slightly concave. The lateral line is slightly curved and extends from the operculum to the base of the caudal fin. The diet of white seabass includes fishes, especially anchovies and sardines and squid. Generally it reaches sexual maturity between 3.5 and 4.5 years of age. The white seabass can spawn up to 5 or 6 times a year. Spawning generally occurs between April and August when water temperature exceeds 18 0C. The female can produce over 1.5 million eggs per spawning event. It grows over 1.5 m in length and 40 kg in weight. It can live for 25 years.


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