Rivulus
| Rivulus | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Cyprinodontiformes |
| Family: | Rivulidae |
| Genus: | Rivulus Poey, 1860 |
| Type species | |
| Rivulus cylindraceus Poey, 1860 | |
Rivulus is a genus of freshwater fish in the Rivulidae family of Cyprinodontiformes. It was formerly considered to be the largest genus in its family; however, the genus's size is currently in dispute. Wilson J. E. Costa split this genus into several new genera (including Anablepsoides, Atlantirivulus, Cynodonichthys, and Laimosemion) in 2011 leaving only a few species left in Rivulus itself.[1] A year later, J.H. Huber released a second paper refuting the proposed split, placing the above genera back in Rivulus and again making the genus the largest in the family Rivulidae.[2] Members of Rivulus and its disputed sister taxa are sometimes kept as aquarium fish.
Distribution
The species indisputably remaining in this genus are found in northern South America (R. formosensis), Cuba and the Isle of Pines (R. cylindraceus and R. insulaepinorum), and Hispaniola (R. roloffi). If Anablepsoides, Atlantirivulus, Cynodonichthys, Laimosemion and Melanorivulus are reintegrated back into Rivulus, the genus has an enormous range from Central America to Northern Argentina.
Species
The following 6 species are universally considered part of Rivulus;
- Rivulus berovidesi R. R. Silva, 2015 [3]
- Rivulus cylindraceus Poey, 1860 (Green rivulus)
- Rivulus formosensis W. J. E. M. Costa, 2008 [4]
- Rivulus insulaepinorum de la Cruz & Dubitsky, 1976 (Isle of Pines rivulus)
- Rivulus roloffi Roloff, 1938 (Hispaniolan rivulus)
- Rivulus tomasi Vermeulen, Valdesalici & García Gil, 2013 [5]
References
- ↑ Costa W.J.E.M. (2011). "Phylogenetic position and taxonomic status of Anablepsoides, Atlantirivulus, Cynodonichthys, Laimosemion and Melanorivulus (Cyprinodontiformes: Rivulidae)". Ichthyological Exploration of Freshwaters 22 (3): 233–249.
- ↑ Huber J.H., 2012. Reappraisal of the Phylogeny of Rivulus and its Allied Focused on External Characters.
- ↑ Silva R.R. (2015). "Rivulus berovidesi, a new killifish species (Teleostei: Rivulidae) from western Cuba". Zootaxa 3949 (2): 289–296. doi:10.11646/zootaxa.3949.2.9.
- ↑ Costa, W.J.E.M. (2008). "Rivulus formosensis, a new aplocheiloid killifish from the upper Corrente River drainage, upper Paraná River basin, central Brazil (Cyprinodontiformes: Rivulidae)". Ichthyological Exploration of Freshwaters 19 (1): 85–90.
- ↑ Vermeulen F.B.M., Valdesalici S., Garcia-Gil J.R. (2013). "Rivulus tomasi (Teleostei: Cyprinodontiformes: Rivulidae), a new killifish from Tobogán de la Selva, middle Orinoco river drainage in the Amazonas Territory, southwest Venezuela". aqua, International Journal of Ichthyology 19 (4): 187–192.