Time, Depth, Planet & Rod

Beyond biome, several additional factors gate which fish can bite. Each fish info page lists the specific requirements.

• Planet - some fish are unique to specific planets (Calypso, Next Island, Rocktropia, ARIS, or Setesh).
• Time of Day - some fish prefer, or only appear during, certain times.
• Minimum Depth - the lure's depth stat must reach at least the fish's minimum depth.
• Lure Type - each fish accepts only a specific set of lure types; lures outside that set will not attract a bite.
• Rod Type - some fish only bite on specific rod types.
• Size / Strength / Difficulty - per-fish combat stats feeding the catch mini-game.

A note on Time of Day: the in-game clock is not a single universal time. Each planet runs on its own day/night cycle, so the current hour depends on where you are, and the longitude of the location on a planet shifts the time further (two spots on the same planet can be at different points of the cycle). The length of a full day also differs from planet to planet, so a "morning" window lasts different real-world durations depending on which planet you fish on.