Abstract
‘Henicorhynchus’thaituisp. nov. is described from a subterranean stream in a karst cave in Phong Nha Ke Bang National Park, Quang Binh Province, Central Vietnam. It differs from all congeners in having a pale pink body in life, smaller eyes with diameter less than the maxillary barbel length, and two pairs of barbels, the maxillary barbel being much longer than the rostral barbel.
Highlights
Vietnam is rich in karst caves, and there are many magnificent caves throughout the country
The Ke Bang limestone massif, which crosses into Laos, has the longest river cave of the world in the Hang Khe Ry and the largest cave passage in the newly discovered Hang Son Doong
A new species of Cyprinidae (Speolabeo hokhanhi Nguyen et al 2018) was described from Central Vietnam where it is found only in the Phong Nha-Ke Bang National Park drained by the Son River of the Gianh River basin in Quang Binh Province (Nguyen et al 2018)
Summary
Vietnam is rich in karst caves, and there are many magnificent caves throughout the country. A new species of Cyprinidae (Speolabeo hokhanhi Nguyen et al 2018) was described from Central Vietnam where it is found only in the Phong Nha-Ke Bang National Park drained by the Son River of the Gianh River basin in Quang Binh Province (Nguyen et al 2018). More cavefish species are expected to exist in limestone karst areas of the middle Annamite Range (Kottelat and Steiner 2011; Kottelat 2017; Nguyen et al 2018). This is evidenced by the present report of a new species of cavefish provisionally referred to the labeonine cyprinid genus Henicorhynchus Smith, from Phong Nha-Ke Bang National Park, Central Vietnam.
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