On an interesting specimen of cownose ray (Pisces: Rhinopteridae) from the Colombian Caribbean

Abstract

The collection of a specimen of cownose ray in the Colombian Caribbean is reported. Based on the presence of 9 rows of teeth in both jaws, it was identified as Rhinoptera Müller & Renie. The range of the species is extended 7,300 km, from Rio de Janeiro to Isla de Salamanca. Some comments on the size at birth and habits of the species are made.

An annotated checklist of the chondrichthyan fishes inhabiting the northern Gulf of Mexico Part 1: Batoidea

“…The two species are morphologically very similar and therefore difficult to differentiate without detailed examination and/or genetic verification. It is likely, based upon historic reports (Bigelow and Schroeder 1953, Acero and Garzon 1982, Isaís and Dominguez 1996, that Rhinoptera brasiliensis has been present in the northern GOM for several decades, if not longer, bringing into question the validity of reports and research focusing on this species without confirming species identity (Jones et al 2017). Care should be taken in applying the results of research focused on this species in the northern GOM until species-specific results can be obtained and compared.…”

“…This species is morphologically very similar to Rhinoptera bonasus and the two species are therefore difficult to differentiate without detailed examination and/or genetic verification. It is likely, based upon historic reports (Bigelow and Schroeder 1953, Acero and Garzon 1982, Isaís and Dominguez 1996, that Rhinoptera brasiliensis has been present in the northern GOM for several decades, if not longer. It has been suggested (e.g.…”