The Aetherfin is a legendary Divine Secret fish in Fisch — a surreal manta ray that ranks among the game's rarest catches. Its 1-in-10,000 (0.01%) spawn rate ties it with the Cataclysm Carp as the most attainable Divine Secret, though "most attainable" is still extremely rare. This fish is a pure flex and a test of persistence.

Where to Catch Aetherfin

You can only catch the Aetherfin in Roslit Bay. Use any rod you own — no specific bait, time of day, weather, or season is required. The catch chance remains the same everywhere in Roslit Bay and cannot be improved with gear or conditions. This is a pure luck grind.

What Makes Aetherfin Hard to Reel

When you hook an Aetherfin, the fish moves erratically across the reeling bar, making it far harder to keep the white progress bar aligned with the blue line. Additionally, you suffer a -95% Progress Speed penalty, meaning the reeling bar fills extremely slowly. This is a signature mechanic of all Divine Secret fish.

You'll know you've hooked one the moment you see the special visual effect (a popup appears above your head) and hear the unique shimmering sound — unmistakable.

How to Catch Aetherfin

  1. Head to Roslit Bay with any rod in your inventory.
  2. Cast your bobber into the water by holding down the cast button.
  3. Wait for a bite. You can shake your rod to attract fish faster, but there's no way to increase the Aetherfin's spawn chance — it's pure RNG.
  4. When you feel a bite, hold down or click to pull the white progress bar toward the blue line. Stay as close to the line as you can.
  5. Expect slow progress. The -95% speed penalty means this reel will take much longer than normal. Do not rush — keep the bar aligned.
  6. Follow the erratic movements. The blue line will jump around unpredictably. Adjust your pull smoothly to track it.
  7. Fill the bottom progress bar completely to reel in your Aetherfin. If the white bar drifts too far from the blue line, you'll lose the fish.
💡 Tip — The Aetherfin has a 1/10,000 chance per cast in Roslit Bay. Expect to spend hours fishing before you see one. Shake your rod between casts to speed up bite frequency, but this won't affect spawn rates.

Aetherfin Stats & Variants

When you catch an Aetherfin, here's what to expect:

  • Weight range: 1 kg to 21,000 kg (average around 5,000 kg)
  • Base XP: 20,000 per catch
  • Rarity: Divine Secret
  • Available mutations: Silver and Rainbow variants exist, adding even more rarity layers to an already legendary catch
💡 Tip — Don't give up if you miss the first few reels. Even experienced players will fail some erratic Divine Secret fish. The real challenge is just being patient enough to get the initial bite.

Why Catch Aetherfin?

Beyond bragging rights, the Aetherfin gives massive XP per catch and fills out your collection with the rarest fish in the game. If you're hunting for all Divine Secrets or trying to complete Fisch's endgame, this is non-negotiable — but be ready for a long grind.