New records of Pimelodella (Siluriformes, Heptapteridae) from Colombia for the Amazon River basin, and redescription of P. serrata

We recorded Pimelodella bockmanni and P. serrata for the first time for Colombia, based on specimens collected in tributaries from the main channel of the Amazonas River, in the so-called Trapecio Amazonico, in the southernmost region of this country. We also present morphometric, meristic, and osteological data of the examined material, and provide a complementary morphological description of the poorly known P. serrata, a species known only from the Madeira River drainage in Bolivia and Brazil.

Automated summary

We report the first records of Pimelodella bockmanni and P. serrata in Colombia, based on specimens collected from tributaries of the Amazonas River. We provide detailed morphometric, meristic, and osteological data, as well as a supplementary morphological description of the poorly known P. serrata, which was previously known only from the Madeira River drainage in Bolivia and Brazil.