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taxobox | name = Sonora chub | image = | image_width = 240px | image_caption = | status = VU | status_system = IUCN2.3 | regnum = Animalia | phylum = classis = Actinopterygii == Description == ''Gila ditaenia'', the ''Sonora chub'' is one of seven species of chub native to Arizona. This particular species is one of the smaller species of ''chub'', rarely exceeding 200 millimeters in length. Most specimens in the United States never even exceed 125 millimeters. The Sonora chub’s body is typically very chubby, hence its name, with fusiform and terete implications in some species. Sonora chubs can be distinguished if one notices the unusually small scales. There are 63 to 75 scales in a lateral line. They have eight fin rays on their dorsal, anal, and pelvic fins with some variation between seven or nine. Their pharyngeal teeth can also distinguish them from other Arizona ''chubs''. They are usually very dark in color with two noticeable black stripes running parallel above and below the lateral line. They also have counter-shading patterns with very light underbellies for camouflage. During mating seasons, they will have red markings on their paired and anal fins, with orange areas on their bellies. A round spot at the base of their tails can easily identify them during their mating seasons (Minckley 1973). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Sonora chub」の詳細全文を読む スポンサード リンク
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