Exploration and progression
Collect small fish and Fishing Points
A focused early fishing loop registers smaller species while earning the points needed to unlock further Fishing Data.
Great Desert Oasis pond or Eidos 7 Clocktower Pond, once fishing access is available.
Fishing can be repeated while you are pursuing missing species or earning points for Data. Catch outcomes are not guaranteed, and the collection is finite rather than an unlimited drop farm.
Stop when the relevant small species are registered or you have enough Fishing Points for the next Data purchase; then switch to the unlocked size class.
Open a guide to find other locations and see what the item is used for.
A focused early fishing loop registers smaller species while earning the points needed to unlock further Fishing Data.