Xiurenbagrus dorsalis

Xiu, Yang and Zheng 2014

Xiurenbagrus dorsalis


Xiurenbagrus dorsalis  Lan, Gan, Wu and Yang 2013 nomen nudum

Lan, Gan, Wu and Yang (2013) provide a brief account of a species they call Xiurenbagrus dorsalis which they say has already been described in a separate publication. Lan et al. (2013) did not explicitlly say that it was new species using, for example, sp. nov. after the name. International Code of Zoological Nomenclature 1999 Article 16 says that this form of words is necessary for species described after 1999 so the species name cannot be available from this account. The Catalogue of Fishes (Eschmeyer, Fricke and van der Laan 2018) mentions that the name appears in this publication but says that it is of uncertain status. The fish was formally described by Xiu, Yang and Zheng (2014) as Xiurenbagrus dorsalis. The Yang in this authorship is Jian Yang of Lan et al. (2013). The paper in which X. dorsalis is available was accepetd by Zootaxa on 19 June 2014 and so the statement in Lan et al. (2013) that the name Xiurenbagrus dorsalis was already published cannot be correct. Xiurenbagrus dorsalis Lan, Gan, Wu and Yang 2013  is a nomen nudem and a synonym of Xiurenbagrus Xiu, Yang and Zheng 2014.




Holotype and only known specimen: GIF 2011050901 60.5mm TL, 49.4mm SL.


Known only from the type locality: Guihong village, Gucheng Town, Fuchuan County, Guangxi Zhuang Autonomous Region, China. Elevation 190 meters. 24°47'30.97"N, 111°19'50.62"E.


Discovered in a well with a small stream with a substrate of small rocks. Nothing is known of the true habitat.


This species has many autapomorphies compared to the other two species in the genus, Xiurenbagrus xiurenensis Yue in Zheng 1981 and Xiurenbagrus gigas Zhao, Lan and Zhang 2004. It was placed in this genus because of the presence of two patches of vomerine teeth which are not found in the other genera with Amblycipitidae.

Conservation Status


Lan et al. (2013) state that: "The population size is extremely small. The specimens (sic) that have ben obtained were collected by local people when using hand pumps to collect drinking water. According to survey visits, only 2-3 specimens are obtained each year." This statement suggests that multiple specimens were known at the time it was written (2013) but if this is the case why was only a holotype assigned and used in the description of Xiu, Yang and Zheng (2014)?

Museum Holdings

As above only.

Key References

Zheng, P.-S. Book 1981 Freshwater fishes of Guangxi Province.
Chen, X.P. and Lundberg , J.G. Journal Article 1995 Xiurenbagrus, a new genus of amblycipitid catfishes (Teleostei: Siluriformes), and phylogenetic relationships among the genera of Amblycipitidae.
Zhao, Y.H., Lan, J.H. and Zhang, C.G. Journal Article 2004 A new species of amblycipitid catfish, Xiurenbagrus gigas (Teleostei: Siluriformes), from Guangxi, China
Lan, J.H., Gan, X., Wu, T.J. and Yang, J. Book 2013 Cave fishes of Guangxi, China
Xiu, L.-H., Yang, J. and Zheng, H.-F. Journal Article 2014 An extraordinary new blind catfish, Xiurenbagrus dorsalis (Teleostei: Siluriformes: Amblycipitidae), from Guangxi, China
Fenolio, D.B. Book 2016 Life in the dark. Illuminating biodiversity in the shadowy haunts of Planet Earth
Xing, Y.C., Zhang, C.G., Fan, E.Y. and Zhao, Y.H. Journal Article 2016 Freshwater fishes of China: species richness, endemism, threatened species and conservation
Zhang, C.G. and Zhou, Y.H. Book 2016 Species diversity and distribution of inland fishes in China