Fishes . / 6o Adaptations of Fishes entiated areas round or oblong which shine star-like in thedark. These are usually symmetrically placed on the sides o£. Fio 44.—Hoadlight Fish, .hl/iniimrn luridn Ooodc and Bean. Gulf Stnain. the body. Tlicy may have also luminous glands or diffuse areaswhich are luminous, but which do not show the specializedstructure of the phosphorescent spots. These glands of similarnature to the spots are mostly on the head or tail. In one

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