最初命名為 Mollienesia petenensis:
ZooBank:4496B689-DE1E-4014-8565-477995E3393B.
- Günther, Albert C. L. G. 1866. "Catalogue of the Physostomi, containing the families Salmonidae, Percopsidae, Galaxidae, Mormyridae, Gymnarchidae, Esocidae, Umbridae, Scombresocidae, Cyprinodontidae, in the collection of the British Museum". Catalogue of the fishes in the British Museum. 6:1-368 (ffm04521)
同種異名 (1):
- Mollienesia gracilis Regan, 1913, 其模式產地在 Lake Petén [Petén Itza], Guatemala. 鑑定者: Rosen & Bailey, 1963
保育: Poecilia petenensis 被評鑑為國際自然保育聯盟瀕危物種紅皮書名單中的 (DD) 資料缺乏 (2020).