Hermit Crab

You catch Hermit Crab at Cirrusea. It is a Common fish, so you need a rod of level 1 or higher. It is omnivorous, so any bait works. When a Common fish takes your bait here, it is Hermit Crab 20% of the time, whichever bait you use.

In the Aquarium it earns 60 Gold an hour.

Dave can bring it back too, from a dive while your boat is at Cirrusea.