Gold-quality fishing depends on zone, skill, and the catch

Casting farther from walkable shore generally increases Fishing Zone. Zone participates in the local quality thresholds, together with Fishing level and the perfect-catch upgrade. A map coordinate is therefore not a universal “gold-star spot” for every rod, skill level, and fish.

Bubbles can improve quality indirectly

A bubble spot increases bite speed and adds +1 effective Fishing Zone. If that extra zone crosses a quality threshold, the caught fish can improve from normal to silver or from silver to gold. Bubbles do not guarantee a specific quality, but it is incorrect to say they affect speed and rarity only.

Night Market submarine

The three signature submarine fish are:

• Midnight Squid (O)798
• Spook Fish (O)799
• Blobfish (O)800

Ghostfish (O)156 is a Mines fish, not one of the submarine’s signature species. Octopus (O)149 is ordinarily a Summer ocean fish from 06:00–13:00; the local Submarine table also contains a low-chance Octopus roll, but that does not make it a submarine-exclusive species.

Pirate Cove

There is no current local fish named “Yellow Perch.” Perch (O)141 is a Winter freshwater fish. Pirate Cove’s cave location includes Stingray (O)836, which is the correct exact example for that location.

Version: Stardew Valley 1.6.15.24356.