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Type: Article
Published: 2020-05-01
Page range: 249–263
Abstract views: 122
PDF downloaded: 2

Characidium chancoense, a new species of South American darter from the Río Cauca drainage, Colombia (Characiformes: Crenuchidae)

Grupo de Investigación en Peces Neotropicales, Fundación para la Investigación y el Desarrollo Sostenible FUNINDES, Cali, Colombia. Programa de Informática de la Biodiversidad, Instituto de Ciencias Naturales, Universidad Nacional de Colombia sede Bogotá. Cra. 30 no. 45-03, edificio 425.Bogotá D.C. Colombia.
Grupo de Investigación en Peces Neotropicales, Fundación para la Investigación y el Desarrollo Sostenible FUNINDES, Cali, Colombia.
51822 N. Charles St., Belleville, IL, 62221 USA.
Pisces Characidiinae Swimbladder Trans-Andean basins Characidium caucanum Characidium phoxocephalum

Abstract

Characidium chancoense new species, is described from the transandean upper Río Cauca drainage in Colombia. It can be distinguished from all congeners by its pigmentation pattern that consists of 7–12 vertical bars, most of which are cuneate-shaped with the vertex ending on or just below the lateral-line scale series, except for the last 1–4, which are dorsoventrally elongate rectangular bars that extend well below the lateral line. Characidium chancoense is sympatric with C. caucanum Eigenmann, C. phoxocephalum Eigenmann, C. cf. zebra Eigenmann and C. cf. boavistae Steindachner. Unlike C. caucanum and C. cf. boavistae, C. chancoense does not appear to be sexually dimorphic.

 

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