Hydrolycus is a genus of large dogtooth characins from tropical South America, where found in the Amazon and Orinoco basins, as well as rivers of the Guianas.[1] The genus includes the largest dogtooth characins, reaching up to 1.17m (3.8ft) in length.[1] They have long, pointed teeth (shorter and less extreme in H. wallacei) used for spearing their prey, generally smaller fish.[2] 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.[3]
Hydrolycus scomberoides (G. Cuvier, 1819) (Payara)
Hydrolycus tatauaiaToledo-Piza, Menezes & dos Santos, 1999
Hydrolycus wallaceiToledo-Piza, Menezes & dos Santos, 1999
References
Froese, Rainer and Pauly, Daniel, eds. (2017). Species of Hydrolycus in FishBase. January 2017 version.
Toledo-Piza, M.; N.A. Menezes; and 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.{{cite journal}}: CS1 maint: uses authors parameter (link)
Goulding, M (1980). The Fishes and the Forest: Explorations in Amazonian Natural History. University of California Press. pp.185–186. ISBN0-520-04131-3.
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