Bibarba bibarba

Bibarba bibarba
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Cypriniformes
Family:	Cobitidae
Genus:	Bibarba
Species:	B. bibarba
Binomial name
	Bibarba bibarba; Y. X. Chen & Y. F. Chen, 2007

Last updated May 28, 2025

Bibarba bibarba is a species of loach that is found in the Chengjiang River of the Long River system in China.^[1] It is the only known congener of Bibarba parvoculus , a troglobitic species described in 2015, from which it is believed to have evolutionarily split in the Early Miocene.^[2]^[3]

Description

B. bibarba is a surface-dwelling species with normal eyes.^[3] Males display a duplication of the lamina circularis on the second and third pectoral rays. The coracoid, mesocoracoid, and scapula are stouter in males, and the three bones are fused with the cleithrum.^[3] It differs from B. parvoculus, by having lower vertebral counts, a narrower anterior part of the frontal bone at the orbital region, and increased sexual dimorphism.^[3]

References

↑ Froese, Rainer; Pauly, Daniel (eds.). "Bibarba bibarba". FishBase . November 2014 version.
↑ Bohlen J; Li F; Šlechtová V. (2020). "Phylogenetic position of the genus Bibarba as revealed from molecular genetic data (Teleostei: Cobitidae)". Ichthyological Exploration of Freshwaters. 29: 297–304.
1 2 3 4 You He; Yongxia Chen; Jian Yang; Lawrence M Page (2021). "Phylogenetic analysis and osteological comparison of the cave-dwelling spined loach, Bibarba parvoculus (Cypriniformes: Cobitidae), and its surface congener" . Zoological Journal of the Linnean Society. 191 (4): 1059–1074. doi:10.1093/zoolinnean/zlaa073.

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[1] Froese, Rainer; Pauly, Daniel (eds.). "Bibarba bibarba". FishBase . November 2014 version.

[2] Bohlen J; Li F; Šlechtová V. (2020). "Phylogenetic position of the genus Bibarba as revealed from molecular genetic data (Teleostei: Cobitidae)". Ichthyological Exploration of Freshwaters. 29: 297–304.

[He-3] 1 2 3 4 You He; Yongxia Chen; Jian Yang; Lawrence M Page (2021). "Phylogenetic analysis and osteological comparison of the cave-dwelling spined loach, Bibarba parvoculus (Cypriniformes: Cobitidae), and its surface congener" . Zoological Journal of the Linnean Society. 191 (4): 1059–1074. doi:10.1093/zoolinnean/zlaa073.

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