Opisthotropis

Opisthotropis is a genus of snakes in the subfamily Natricinae of the family Colubridae. The genus is native to Southeast Asia and South China.

Species
The genus Opisthotropis contains the following 25 species which are recognized as being valid, listed alphabetically by scientific name.
 * Opisthotropis alcalai W. Brown & Leviton, 1961 – Gary's mountain keelback
 * Opisthotropis andersonii (Boulenger, 1888) – Anderson's stream snake
 * Opisthotropis atra Günther, 1872
 * Opisthotropis cheni Zhao, 1999
 * Opisthotropis cucae David, Pham, T.Q. Nguyen & T. Ziegler, 2011 (found in Kontum, Vietnam) – Cuc's mountain snake
 * Opisthotropis daovantieni Orlov, Darevsky & Murphy, 1998 – Tien's mountain stream snake
 * Opisthotropis durandi Teynié, Lottier, David, T.Q. Nguyen & G. Vogel, 2014 – Durand's mountain stream snake
 * Opisthotropis guangxiensis Zhao, Y.-M. Jiang & Huang, 1978 – Guangxi mountain keelback
 * Opisthotropis haihaensis T. Ziegler, Pham, T.V. Nguyen, T.Q. Nguyen, J. Wang, Y.-Y. Wang, Stuart & Le, 2019 – Hai Ha mountain stream keelback
 * Opisthotropis hungtai J. Wang, Lyu, Zeng, Lin, Yang, T.Q. Nguyen, Le, T. Ziegler & Y.-Y. Wang, 2020 – Hung-Ta Chang's mountain keelback
 * Opisthotropis jacobi Angel & Bourret, 1933 – Chapa mountain keelback
 * Opisthotropis kikuzatoi (Okada & Takara, 1958) – Kikuzato's brook snake
 * Opisthotropis kuatunensis Pope, 1928 – Chinese mountain keelback
 * Opisthotropis lateralis Boulenger, 1903 – Tonkin mountain keelback
 * Opisthotropis latouchii (Boulenger, 1899) – Sichuan mountain keelback
 * Opisthotropis laui Yang, Sung & Chan, 2013 - Lau's mountain stream snake
 * Opisthotropis maculosa Stuart & Chuaynkern, 2007 – yellow-spotted mountain stream snake
 * Opisthotropis maxwelli Boulenger, 1914 – Maxwell's mountain keelback
 * Opisthotropis rugosa (Lidth de Jeude, 1890) – Sumatran stream snake
 * Opisthotropis shenzhenensis Y.-Y. Wang, Q. Guo, Liu, Lyu, J. Wang, Luo, Sun & Zhang, 2017 – Shenzhen mountain stream snake
 * Opisthotropis spenceri M.A. Smith, 1918 – Spencer’s stream snake or Smith's mountain keelback
 * Opisthotropis tamdaoensis T. Ziegler, David & Vu, 2008
 * Opisthotropis typica (Mocquard, 1890) – olive mountain keelback
 * Opisthotropis voquyi T. Ziegler, David, T.N. Ziegler, Pham, T.Q. Nguyen & Le, 2018 – Vo Quy's mountain stream keelback
 * Opisthotropis zhaoermii Ren, K. Wang, K. Jiang, P. Guo & Li, 2017 – Zhao's mountain stream snake

Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Opisthotropis.