Tucanoichthys tucano. A. Male in life, photographed in aquarium, not measured, not preserved (photo by F. Schäfer). B. Female in life, photographed in aquarium, not measured, not preserved (photo by F. Schäfer). C. TCWC 20316.02, 15.2 mm SL, alcohol preserved specimen. D. TCWC 20316.01, 15.5 mm SL, c&s specimen, lateral view of whole skeleton (hyopalatine arch, opercular series and shoulder girdle of right side, and gill arches removed).

 
 
  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