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).
However, Amberjack is also farmed in Japan and Australia, using 3 or 4 different species of the Jack family. Wild Amberjack have the tendency to have parasites.Hiramasa from Japan is also an Amberjack but does not have a parasite tendency.his species of Amberjack is also farmed in Japan and Australia. Although there are sustainability issues with farmed Amberjack (see below), the meat of the farmed fish is generally considered to be a higher quality than the wild Amberjack.