How to get the Golden Scale in Zelda Ocarina of Time

Adult Link can earn the Golden Scale in the Ocarina of Time remake by catching a fish longer than 60 cm at the Fishing Pond. The item lets Link dive deeper than the Silver Scale, opening access to underwater areas and treasures.

The pond is at Lake Hylia, which is dry until the Water Temple is cleared. Before then, reach it using a planted Magic Bean or the Scarecrow Song and Hookshot. Pay 30 rupees to rent a rod, fish in the middle of the pond, then keep a qualifying catch and ask the Fishing-Pond Man to inspect it.