最初命名為 Cynodonichthys tenuis:
- Meek, Seth Eugene. 1904. "The fresh-water fishes of Mexico north of the isthmus of Tehuantepec". Field Columbian Museum Publication. 1-252 (ffm00159)
同種異名 (1):
- Rivulus godmani Regan, 1907, 其模式產地在 Guatemala. 鑑定者: Huber, 1992
- Rivulus myersi Hubbs, 1936, 其模式產地在 3 kilometers south of Progreso, Yucatán, Mexico. 鑑定者: Huber, 1992
- Rivulus hendrichsi Alvarez & Carranza, 1952, 其模式產地在 Salto de Agua, Chiapas, southeastern Mexico. 鑑定者: Huber, 1992
保育: Rivulus tenuis 尚未被國際自然保育聯盟列入IUCN受威脅物種紅皮書名單中.