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A new species of Hemigrammus (Characiformes: Characidae) from western Amazon River basin, Colombia
Author(s) -
AlbornozGarzón Juan G.,
MéndezLópez Alejandro,
DoNascimiento Carlos,
Lima Flávio C. T.
Publication year - 2019
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/jfb.14091
Subject(s) - characidae , characiformes , biology , peduncle (anatomy) , fish fin , amazon rainforest , amazon basin , anatomy , ecology , fishery , fish <actinopterygii>
A new species of Hemigrammus is described from the Amazon Basin near Leticia, Departamento Amazonas, Colombia. In common with some congeners and some Hyphessobrycon spp., the new species colour pattern lacks a humeral blotch but has a caudal‐peduncle blotch. It can be distinguished from congeners with a similar colour pattern by having: a relatively deep body (30.2%–39.0% L S ), 20–24 branched anal‐fin rays, 6–8 perforated scales of the lateral line, anal‐fin base without a conspicuous black stripe, 3–5 maxillary teeth, maxillary teeth with 1–3 cusps, a thin longitudinal midlateral line and a well‐defined oval shaped caudal blotch, extending from caudal peduncle into the lower caudal‐fin rays. Comparisons with congeners and with Hyphessobrycon species sharing the same general colour pattern are presented.