The extraocular muscles must turn each eye inward; the sphincter muscles must work to make the pupil smaller; and the ciliary muscles must contract to allow the lens to change to a shape that will produce a clearer image. Solution: Focus on a distant object to immediately feel your eyes relax.
Its upper body is blue, the belly is silver, and the fins are yellowish-gray. The common amberjack can reach five to six feet (1.5 to 1.8 m) in length and more than 100 pounds (45 kg) in weight. The average weight, however, is 10 to 15 pounds (4.5 to 6.8 kg).
Other Names. Amberjack, Coronado, Amberfish. Description. Greater amberjack is a large reef fish found in the Gulf. It is the largest and most common amberjack that lives along the coast.More slender than most jacks, they do not have finlets and the keel at the base of the tails is slight and soft.The back is bluish purple, the sides yellowish and the underside silver.t is the largest and most common amberjack that lives along the coast.More slender than most jacks, they do not have finlets and the keel at the base of the tails is slight and soft. The back is bluish purple, the sides yellowish and the underside silver.