Acheilognathus

Acheilognathus iis a genus of freshwater ray-finned fishes belonging to the family Acheilognathidae, the bitterlings. The fishes in this genus are found in Asia. The name is derived from the Greek a, meaning "without", the Greek cheilos, meaning "lip", and the Greek gnathos, meaning "jaw".

Acheilognathus
Acheilognathus rhombeus
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Cypriniformes
Family:	Acheilognathidae
Genus:	Acheilognathus Bleeker, 1860
Type species
Capoeta rhombea Temminck & Schlegel, 1846[1]
Synonyms[1]
Pseudoperilampus Bleeker, 1863

Morphology

Fish of this genus range in length from 5 to 27 cm. They are similar in appearance to fishes of the genus Puntius.

Species

These are the currently recognized species in this genus:^[2]

• Acheilognathus amurensis (Holčík, 1962)
• Acheilognathus asmussii (Dybowski, 1872) (Russian bitterling)
• Acheilognathus barbatulus Günther, 1873
• Acheilognathus barbatus Nichols, 1926
• Acheilognathus binidentatus G. L. Li 2001
• Acheilognathus brevicaudatus Y. R. Chen & Z. Y. Li, 1987
• Acheilognathus changtingensis Qing Yang, Y. R. Zhu, B. X. Xiong & H. Z. Liu, 2011
• Acheilognathus chankaensis (Dybowski, 1872) (Khanka spiny bitterling)
• Acheilognathus coreanus Steindachner, 1892
• Acheilognathus cyanostigma D. S. Jordan & Fowler, 1903 (Striped bitterling)
• Acheilognathus deignani (H. M. Smith, 1945)
• Acheilognathus elongatoides Kottelat, 2001
• Acheilognathus elongatus (Regan, 1908) (Elongate bitterling)
• Acheilognathus fasciodorsalis V. H. Nguyễn, 2002
• Acheilognathus gracilis Nichols, 1926
• Acheilognathus hypselonotus (Bleeker, 1871)
• Acheilognathus imberbis Günther, 1868
• Acheilognathus imfasciodorsalis V. H. Nguyễn, 2002
• Acheilognathus kyphus (Đ. Y. Mai, 1978)
• Acheilognathus lanchiensis (Herre & S.-Y. Lin, 1936)
• Acheilognathus longibarbatus (Mai, 1978)
• Acheilognathus longipinnis Regan, 1905 (Deepbody bitterling)
• Acheilognathus longispinnis (Ōshima, 1926)
• Acheilognathus 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 mengyangensis Z. G. Chen, J. H. Gong & Y. S. Guo, 2021
• Acheilognathus meridianus (H. W. Wu, 1939)
• Acheilognathus microphysa J. X. Yang, X. L. Chu & Y. R. Chen, 1990
• Acheilognathus nanchongensis X. J. Deng, 1996
• Acheilognathus nguyenvanhaoi H. D. Nguyễn, Đ. H. Trần & T. T. Tạ, 2013
• Acheilognathus omeiensis (H. J. Shih & T. L. Tchang, 1934)
• Acheilognathus 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 tonkinensis (Vaillant 1892)
• Acheilognathus typus (Bleeker, 1863)
• Acheilognathus yamatsutae Mori, 1928

In addition, there may be two undescribed species in Korea awaiting further study:

• Acheilognathus sp.^[3]
• Acheilognathus sp. HR^[4]