Acheilognathus fish native to Asia . The name is derived from the Greek a , meaning "without", the Greek cheilos , meaning "lip", and the Greek gnathos , meaning "jaw".
Fishes of this genus have length from 5 to 27 cm. They are small and the shape is likely to the fishes of genus Puntius
There are currently 42 recognized species in this genus:
Acheilognathus asmussii (Dybowski , 1872) (Russian bitterling)Acheilognathus barbatulus Günther, 1873 Acheilognathus barbatus Nichols , 1926Acheilognathus brevicaudatus Y. R. Chen & Z. Y. Li, 1987 Acheilognathus chankaensis Dybowski, 1872 Acheilognathus changtingensis Qing Yang, Y. R. Zhu, B. X. Xiong & H. Z. Liu, 2011 Acheilognathus coreanus Steindachner , 1892Acheilognathus cyanostigma D. S. Jordan & Fowler , 1903 (Striped bitterling)Acheilognathus deignani (H. M. Smith, 1945) Acheilognathus elongatoides Kottelat , 2001Acheilognathus elongatus (Regan , 1908) Acheilognathus fasciodorsalis V. H. Nguyễn, 2001 Acheilognathus gracilis Nichols , 1926Acheilognathus hondae (D. S. Jordan & Metz, 1913) Acheilognathus hypselonotus (Bleeker , 1871) Acheilognathus imberbis Günther, 1868 Acheilognathus imfasciodorsalis V. H. Nguyễn, 2001 Acheilognathus kyphus (Đ. Y. Mai, 1978) Acheilognathus longibarbatus (Đ. Y. Mai, 1978) Acheilognathus longipinnis Regan , 1905Acheilognathus macromandibularis A. Doi, R. Arai & H. Z. Liu, 1999 Acheilognathus macropterus (Bleeker , 1871) Acheilognathus majusculus I. S. Kim & H. Yang, 1998 Acheilognathus melanogaster Bleeker, 1860 (Japanese bitterling)Acheilognathus meridianus (H. W. Wu, 1939) Acheilognathus microphysa J. X. Yang, X. L. Chu & Y. R. Chen, 1990 Acheilognathus nguyenvanhaoi H. D. Nguyễn, Đ. H. Trần & T. T. Tạ, 2013 Acheilognathus omeiensis (H. J. Shih & T. L. Tchang, 1934) Acheilognathus peihoensis Fowler , 1910Acheilognathus polylepis (H. W. Wu, 1964) Acheilognathus polyspinus (Holčík, 1972) Acheilognathus rhombeus (Temminck & Schlegel , 1846) Acheilognathus striatus Qing Yang, B. X. Xiong, Q. Y. Tang & H. Z. Liu, 2010 Acheilognathus tabira D. S. Jordan & W. F. Thompson, 1914 Acheilognathus tabira erythropterus R. Arai, Fujikawa & Nagata, 2007 Acheilognathus tabira jordani R. Arai, Fujikawa & Nagata, 2007 Acheilognathus tabira nakamurae R. Arai, Fujikawa & Nagata, 2007 Acheilognathus tabira tabira D. S. Jordan & W. F. Thompson, 1914 Acheilognathus tabira tohokuensis R. Arai, Fujikawa & Nagata, 2007 Acheilognathus taenianalis (Günther, 1873) Acheilognathus tonkinensis (Vaillant, 1892) Acheilognathus typus Bleeker, 1863 Acheilognathus yamatsutae T. Mori, 1928 
