What is "tometes"

Tometes is a genus of rheophilic fish in the family Serrasalmidae found in northern South America. Three of the six species are restricted to river basins in the Guiana Shield, while T. makue is from the Rio Negro and Orinoco basins. All members of this genus are phytophagous. The genus name Tometes was coined in 1850 by Valenciennes in reference to the incisiform teeth.

When the type species of the genus, T. trilobatus, was described in 1850, it was placed in synonymy with Myleus setiger, the type species of the genus Myleus, which is why Tometes and Myleus were considered to be the same genus for a long time. It was just later that the two genera were revalitated and other specimen could be categorized in the genus Tometes.