Troglonectes shuilongensis

(Deng, Xiao, Hou and Zhou 2016)

CypriniformesCobitoidei Nemacheilidae


Oreonectes shuilongensis  Deng, Xiao, Hou and Zhou 2016




Holotype: GNUG20100618010, 66.0 mm TL, 54.1 mm SL

Paratypes: GNUG20090723001–GNUG20090723003, 54.58–62.29 mm TL, 48.12–50.86 mm SL

GNUG20100618001–GNUG20100618009, 40.62–63.64 mm TL, 34.34–51.40 mm SL


Known only from the type locality: Unnamed stream in Liujiang River basin, Sandu County, Shuilong Township, China (25°50′44.4″ N, 107°52′54.3″ E).


The species inhabits an underground river flowing in a cave. The cave, which opens near a hilltop, is approximately 150–200 m in length. The underground river is near the bottom of the cave and is approximately 15m long and 0.15–0.85 m wide. Its flow is gentle and clear, and the average depth of the water is 0.40 m. This new species was observed at depths of 0.01–0.40 m. In the underground river, the only other aquatic organisms found were small shrimps (Deng et al. 2016).


Placed in the genus Troglonectes (from the genus Oreonectes) by Huang et al. (2019).

There are 19 described species in the genus Troglonectes (Eschmeyer 2022), all expect one are hypogean fishes with reduced eyes, reduced pigment and reduced scales. The only epigean member of the genus is Troglonectes hechiensis Zhao, Liu, Du and Luo 2021. The epigean species is a member of a monophyletic group which also contains T. furcocaudalis, T. daqikongensis, T. jiarongensis and T. shuilongensis (Zhao, Liu, Du and Luo 2021).

Conservation Status


Museum Holdings

As above only.

Key References

Deng, H., Xiao, N., Hou, W. and Zhou, J. Journal Article 2016 A new species of the genus Oreonectes (Cypriniformes: Nemacheilidae) from Guizhou, China
Huang, J.Q., Yang, J., Wu, Z.Q. and Zhao, Y.H. Journal Article 2019 Oreonectes guilinensis (Teleostei, Cypriniformes, Nemacheilidae), a new loach species from Guangxi, China
Zhao, L.-X., Liu, J.-H., Du, L.N. and Luo, F.G. Journal Article 2021 A new loach species of Troglonectes (Teleostei: Nemacheilidae) from Guangxi, China