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| American soles | ||||||||||
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The American soles are a family (Achiridae) of flatfish occurring in both freshwater and marine environments of the Americas. The family includes about 28 species in nine genera. These are closely related to the soless (Soleidae), and have been classified as a subfamily of it, but achirids have a number of distinct characteristics.
Eyes are on the right side, and the eyed-side lower lip has a distinctive fleshy rim. The dorsal and anal fins are usually separate from the caudal fin. The pectoral fins are small or nonexistent.