Diagram of selected anatomical complexes showing relation between sequence of ossification of Salminus brasiliensis (from Mattox et al. 2014) and losses in the skeleton of Tucanoichthys tucano. Solid horizontal bars represent bone presence (fixed length). Error bars associated with solid horizontal bars indicate length at which a particular bone is present in some but not all individuals (minimum length). Black bars represent ossifications present and gray bars ossifications absent in Tucanoichthys. The black/grey bar represents the nasal in which intraspecific variation was found.

  Part of: Mattox GMT, Conway KW (2021) Osteology of Tucanoichthys tucano Géry and Römer, an enigmatic miniature fish from the Amazon basin, Brazil (Teleostei: Characiformes: Characidae). Vertebrate Zoology 71: 645-667. https://doi.org/10.3897/vz.71.e71886