Vertebrate Zoology 57(1): 15-21, doi:
Knodus pasco sp. n. - a new characid fish (Teleostei: Characiformes: Characidae) from Peru
expand article infoAxel Zarske‡
‡ Senckenberg Naturhistorische Sammlungen Dresden, Museum für Tierkunde,, Dresden,, Germany

Corresponding author: Axel Zarske ( axel.zarske@senckenberg.de )

© Axel Zarske.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation: Zarske A (2007) Knodus pasco sp. n. - a new characid fish (Teleostei: Characiformes: Characidae) from Peru. Vertebrate Zoology 57(1): 15-21
Open Access
Abstract
A new species – Knodus pasco sp. n. – from surroundings of San Antonio de Cacazú in Peru (Departamento Pasco) is described (Teleostei: Characiformes: Characidae). It is a small species of the genus Knodus EIGENMANN, 1911 (lateral line complete, basis of caudal fin scaled, four teeth in the second row of premaxillary bone), which differs from all congeners through the following combination of features: (1) six (rarely fi ve) maxillary teeth, (2) six (rarely fi ve) tri- to quincuspid premaxillary teeth in the outer row, which is very irregular, (3) 37–39 scales in lateral line, (4) 7/1/4 scales before dorsal fin, (5) anal fin with iv–v, 17–19, i fin rays, (6) head relatively small (3.79–4.05 times in SL), (7) a dark longitudinal band (two to two and a half scales wide) from gill-cover to the tips of middle caudal fin rays, (8) a very faint vertical humeral spot and (9) a black longitudinal band in dorsal fin.
Keywords
Teleostei, Characiformes, Characidae, Knodus, new species, Neotropis, Pasco, Peru