Hydrolycus
| Hydrolycus | |
|---|---|
 | |
| Hydrolycus scomberoides | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Characiformes |
| Family: | Cynodontidae |
| Genus: | Hydrolycus (J. P. Müller & Troschel, 1844) |
| Type species | |
| Hydrocyon scomberoides | |
Hydrolycus is a genus of freshwater ray-finned fishes belonging to the family Cynodontidae, the dogtooth characins. These fishes are found in tropical South America, where found in the Amazon and Orinoco basins, as well as rivers of the Guianas.[2] The genus includes the largest dogtooth characins, reaching up to 1.17 m (3.8 ft) in length.[2] They have long, pointed teeth (shorter and less extreme in H. wallacei) used for spearing their prey, generally smaller fish.[3] In a study of the stomachs of 45 individuals, most were empty, but among the remaining the prey fish were 15–50% of the length Hydrolycus itself.[4]
In 1999 two new species were described, the first in this genus in 158 years.[2][3]
Species
[edit]
There are currently four described species.[5]
- Hydrolycus armatus (Jardine, 1841) (Payara)
- Hydrolycus scomberoides (G. Cuvier, 1819) (Payara)
- Hydrolycus tatauaia Toledo-Piza, Menezes & dos Santos, 1999
- Hydrolycus wallacei Toledo-Piza, Menezes & dos Santos, 1999
References
[edit]- ↑ Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Genera in the family Cynodontidae". Catalog of Fishes. California Academy of Sciences. Retrieved 17 July 2025.
- 1 2 3 Froese, Rainer; Pauly, Daniel (eds.). "Species in genus Hydrolycus". FishBase. January 2017 version.
- 1 2 Toledo-Piza, M.; N.A. Menezes; G.M. Santos (1999). "Revision of the Neotropical fish genus Hydrolycus (Ostariophysi: Characiformes: Cynodontidae) with the description of two new species". Ichthyol. Explor. Freshwaters. 10 (3): 255–280.
- ↑ Goulding, M (1980). The Fishes and the Forest: Explorations in Amazonian Natural History. University of California Press. pp. 185–186. ISBN 0-520-04131-3.
- ↑ Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Species in the genus Hydrolycus". Catalog of Fishes. California Academy of Sciences. Retrieved 17 July 2025.
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