FIGURE 1. a in Intraspecific variation of the caudal fin skeleton in Osteoglossum bicirrhosum Cuvier 1829 (Teleostei: Osteoglossomorpha: Osteoglossidae)

FIGURE 1. a) The bonytongue Osteoglossum bicirrhosum, MNRJ 1212 (306 mm SL); b) Map with the geographic distribution of the specimens examined in the present study: I. Overview of South America river drainages. The spots represent specimen localities found in the MNRJ – Neodat search page; II. Close showing the localities in the sampled area. Assigned numbers depicted in Annex 1; III. Detail of the three sub-basins with the localities of the specimens used in our geographical comparisons. Maps were composed based on the online maps from IBGE (Instituto Brasileiro de Geografia e Estatística) and from the Neodat Project – MNRJ page.