Neolissochilus subterraneus
Neolissochilus subterraneus, commonly known as the cave brook carp, is a species of cyprinid cavefish that is endemic to the Tham [Phra Wang Daeng] cave within Thung Salaeng Luang [National Park], Phitsanulok Province in Thailand. The genus name derives from the Greek words "neos", "lissos", and "cheilos"; they mean new, smooth, and lip respectively.