All Fish
Fishing in 99 Nights in the Forest is the most stable source of food in the game. Chests are random and hunts can go sideways, but a pond and a rod guarantees calories. Some species have meaningful sell value and certain secret fish drop diamonds — but you'll need the right rod tier.
Cards list location (pond, river, glacial lake), minimum rod required, recommended bait and sell value. Start with Mackerel and Jellyfish on the Old Rod; move to the Good Rod to open the mid catalogue; save the Strong Rod for end-game secret species.