Tucano tetra
Tucanoichthys tucano
- Least concern
- Card rarity: Common
- Fish

Tucanoichthys is a monospecific genus of freshwater ray-finned fish belonging to the family Acestrorhamphidae, the American characins. The only species in the genus is Tucanoichthys tucano, a characin which is endemic to Brazil, where it is found in the Uaupés River.
Classification
- Class
- Actinopterygii
- Order
- Characiformes
- Family
- Acestrorhamphidae
- Genus
- Tucanoichthys