A new species of Characidium Reinhardt, 1867 (Characiformes: Crenuchidae) endemic to the Atlantic Forest in Paraná State, southern Brazil. Neotrop. ichthyol. vol.14 no.3 Maringá 2016 Epub Sep 30, 2016. Marcelo R. S. Melo , Paulo A. Buckup , Osvaldo T. Oyakawa
http://dx.doi.org/10.1590/1982-0224-20160014

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Fig. 1 Characidium travassosi, new species: (a) MZUSP 85940, 33.8 mm SL, holotype in lateral, dorsal and ventral views; stream tributary of rio Jordão, rio Iguaçu basin; (b) MZUSP 85938, 32.0 mm SL, and (c) MZUSP 85938, 32.9 mm SL, paratypes, rio Quadrado, rio Iguaçu basin; (d) MZUSP 68142, 56.3 mm SL, paratype, rio Taquari, tributary of rio Capivari, rio Ribeira de Iguape basin, (e) MZUSP 68144, 40.3 mm SL, paratype, rio Taquari tributary of rio Capivari, rio Ribeira de Iguape basin.

Distribution. Characidium travassosi is only known from Paraná State, Brazil, in small cold-water creeks of the Mata Atlântica biome. It is known from the streams draining the west side of Serra da Esperança into rio Jordão, a tributary of the right bank of rio Iguaçu, rio Paraná Basin; and from rio Taquari, a small stream at Serra da Graciosa, which runs north into the rio Capivari, in the southern-most portion of the rio Ribeira de Iguape coastal system...
Etymology. The specific name is dedicated to Haroldo Travassos, a deceased Brazilian ichthyologist, in recognition to the contributions he made for the taxonomy of the genus Characidium . Travassos worked at the Brazilian Museu Nacional, and was responsible for the description of 13 species of Characidium between 1944 and 1967, mostly from the South and Southeastern Brazil.

Conservation status. Considering that current relevant threats to the species were not detected in its distribution area, Characidium travassosi can be classified as Least Concern (LC), according to the International Union for Conservation of Nature categories and criteria