paraschistura ilamensis, a new species of loach from the tigris river drainage (teleostei: nemacheilidae)

paraschistura ilamensis , new species, is described from the tigris river drainage, iran. it is distinguished from other species of paraschistura in iran by a combination of the following characters: emarginate caudal fin, stout, deep and scaled body, deep caudal peduncle, 7-10 irregular and interrupted vertical pale brown bars on flanks, two obvious dark spots on the upper and lower caudal fin unbranched rays, and moveable protuberance at the antero-ventral corner of the eye in males.