Treasures of Mexico: The Mixtec, Aztec & Maya Codices - Mixtec Zouche-Nuttall Codex. Note the band on the tail of the fish.
Stela 1 Izapa - The Storm-bringer carving - the fish in the water and in his net have banded tails.
Izapa Stela 67 - the fish have banded tails.
Banded fish tails Stela 67 with metallic silver ink.