Cynodontinae
| Cynodontinae Temporal range: Miocene - Present |
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|---|---|
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| Hydrolycus sp. | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Characiformes |
| Family: | Cynodontidae |
| Subfamily: |
Cynodontinae Eigenmann, 1907 |
| Genera | |
Cynodontinae is a subfamily of tropical South American fish of the order Characiformes. They are characterized by an oblique mouth and very distinct canines. They are not prized as food fish, but are important in subsistence and commercial fisheries.Hydrolycus are game fish, having been recently added to the International Game Fish Association in the fly and rod class. Cynodontid fish are also sometimes housed in aquaria.
This monophyletic subfamily contains only a few species: three species of Cynodon, four speciecs of Hydrolycus, and one species in the monotypic Rhaphiodon genus, Rhaphiodon vulpinus. These fish have been previously classified within Characidae.
Rhaphiodon and Cynodon are sister groups to each other; these two genera together have a sister group relationship to the genus Hydrolycus.
Cynodontinae species are found throughout the Orinoco and Amazon basins, as well as the rivers of the Guianas. Of the cynodontines, R. vulpinus has the greatest distribution, including the Paraná-Paraguay River and Uruguay River basins. Fossil teeth have been found in the Magdalena River basin and Salta, Argentina, where cynodontines are not currently found.
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