Aboslute dating

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These loaches often bury themselves in mud to overwinter or escape predators.The spine under the eye when erected is an anti-predator device, discouraging swallowing by other fishes and birds.

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Males have bony extensions of their pectoral fin rays, known as lamina circularis or scale of Canestrini, and no swellings of their body sides.This family of loaches, sometimes called sting-loaches, is found in Eurasia and Morocco and has about 28 genera with about 236 species (Berra, 2001; Nelson, 2006; Eschmeyer and Fong, 2011).Berra (2001) does not indicate the more southern distribution of this genus in Khuzestan and Fars provinces of Iran. Anonymous (1988a) places Cobitidae on the Official List of Family-Group Names in Zoology (rather than the grammatically correct but unused Cobitididae) and Cobitis taenia is designated as the type species for the genus Cobitis (see also Kottelat (1986) for further information).Foods are mostly small insects, worms and crustaceans detected by the aid of the barbels on the habitat bottom. Most species bury themselves in sand or mud during the day, emerging to feed at night.Movement is by undulations of the body, particularly marked in the more elongate species.

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