Fish biodiversity in three northern islands of the Seaflower Biosphere Reserve Colombian Caribbean

The dataset comprise a depurated inventory of the fish species reported from the northern area of the Reserva, that is the three islands Roncador, Serrana, Serranilla and Quitasueño, the larger and more western island, which has not been yet the official target of an expedition. The dataset include all the fish species seen during the expeditions carried upon between 2015 and 2017 to the islands plus the registers previously published in Bolaños-Cubillos et al. (2015), Polanco F. (2015) and Robertson & Van Tassell (2015).