Mussel

The Mussel is a 2-star rarity fish species that can be caught at Fishing Level 3 in Heartopia. It is available all year round.

To catch Mussel, players should fish during any time of day in Rainy or Rainbow weather. This species is accessible to newer anglers and makes a good target for early fishing sessions. Rainbow weather windows are rare and highly valuable, so prioritize this catch when the conditions align.

The Mussel contributes to the Fish Observation collection log and may appear as a target in daily fishing requests. Catching every species, including common ones, is essential for players pursuing collection completion and the associated achievement badges. Even modest catches build fishing experience that unlocks access to rarer and more valuable species at higher hobby levels.