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
| |
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
[edit]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
[edit]- ^ 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.
- ^ a b c d 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.