n = 8
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Lonchopisthus ancistrus | Smith-Vaniz & Walsh, 2017 | Lonchopisthus ancistrus | Opistognathidae | Hook jawfish |
| Lonchopisthus higmani | Mead, 1959 | Lonchopisthus higmani | Opistognathidae | |
| Lonchopisthus lemur | (Myers, 1935) | Lonchopisthus lemur | Opistognathidae | |
| Lonchopisthus lindneri | Ginsburg, 1942 | Lonchopisthus micrognathus | Opistognathidae | Swordtail jawfish |
| Lonchopisthus meadi | Menezes & Lima de Figueiredo, 1971 | Lonchopisthus lemur | Opistognathidae | |
| Lonchopisthus micrognathus | (Poey, 1860) | Lonchopisthus micrognathus | Opistognathidae | Swordtail jawfish |
| Lonchopisthus sinuscalifornicus | Castro-Aguirre & Villavicencio-Garayzar, 1988 | Lonchopisthus sinuscalifornicus | Opistognathidae | Longtailed jawfish |
| Lonchopisthus vanderbilti | Mowbray, 1928 | Lonchopisthus micrognathus | Opistognathidae | Swordtail jawfish |