Glowfin
Glowfins are deep-sea pets that are spotted intermittently, so it can take many Sooshes a while to catch them. They provide a nice atmosphere in any dark area.
✦ How to Obtain:
This pet is earned via foraging in the Breathless Depths during the Summer Starlight Festival.
✦ Can it be Sold or Traded?
You cannot sell this pet for real-life currency or koinpeito, but it can be resold from the inventory.
Trading for carats, art, other characters, etc., is acceptable.
Availability
Source:
Breathless Depths