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aqua 7(1)_Rivulus paracatuensis

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Volume 7, Issue 1 – March 2003

Wilson J. E. M. Costa: Rivulus paracatuensis n. sp. (Cyprinodontiformes: Rivulidae):a new rivuline species from the Rio São Francisco basin, Brazil, pp. 39-43

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Description

SINGLE PAPER

Volume 7, Issue 1 – March 2003

Wilson J. E. M. Costa: Rivulus paracatuensis n. sp. (Cyprinodontiformes: Rivulidae):a new rivuline species from the Rio São Francisco basin, Brazil, pp. 39-43

Abstract

Rivulus paracatuensis n. sp. is described from a small stream in the Rio Paracatú floodplains, Rio São Francisco basin, Minas Gerais, Brazil. It was previously misidentified as R. decoratus, the only other species of the genus occurring in the São Francisco basin, but described from Ibiraba, Bahia, which is about 1,000 km north of the Rio Paracatú. The new species is easily distinguished from R. decoratus by having more dorsal, caudal and pectoral fin rays, more vertebrae, more scales in the longitudinal series and more scale rows around the caudal peduncle, a wider basihyal, and a distinct male colour pattern.

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