Andrade M. C., Jégu Michel, Giarrizzo T. (2016). Tometes kranponhah and Tometes ancylorhynchus (Characiformes : Serrasalmidae), two new phytophagous serrasalmids, and the first Tometes species described from the Brazilian Shield. Journal of Fish Biology, 89 (1), p. 467-494. ISSN 0022-1112.
Titre du document
Tometes kranponhah and Tometes ancylorhynchus (Characiformes : Serrasalmidae), two new phytophagous serrasalmids, and the first Tometes species described from the Brazilian Shield
Journal of Fish Biology, 2016,
89 (1), p. 467-494 ISSN 0022-1112
Two new species of Tometes from the Brazilian Shield rapids are described. Tometes kranponhah is endemic to the Xingu River basin, whereas Tometes ancylorhynchus occurs both in the Xingu and the Tocantins-Araguaia River basins. The two species are sympatric in the Xingu drainages and havemany similarities in morphology and colouration. Major diagnostic differences are the dark pigmentation on the opercle of T. kranponhah and its distinct snout shape and arrangement of premaxillary teeth. In addition, T. kranponhah is a large fish that is abundant in the Xingu River, whereas T. ancylorhynchus is a medium-sized fish for which there are few records.
