Community-reported
Based on player guides and/or gameplay footage, not confirmed directly from the game or the developer yet.
Fish aren't just for selling, they can also be used as gambling stakes
Gameplay footage shows caught fish (including a grilled fish) being used as stakes at the roulette table, not just sold for cash. A catch can be sale value, a collection target, or something you risk trying to turn into more, so it's worth deciding what you want from a catch before selling it on autopilot.