What to know
- Aetherfin is a Divine Secret–rarity fish with very low catch odds
- It can only be caught in Roslit Bay
- No bait, time, or weather requirements
- High luck and persistence matter more than speed
Aetherfin is one of the most sought-after Divine Secret collectibles in Fisch. While it doesn’t require complicated conditions to spawn, its rarity alone makes it a long-term goal. If you’re aiming to complete high-tier bestiary entries, understanding where and how to fish for it efficiently is essential.
Quick overview of Aetherfin
| Category | Details |
|---|---|
| Fish name | Aetherfin |
| Rarity | Divine Secret |
| Location | Roslit Bay |
| Catch odds | ~1 in 10,000 |
| Bait required | No specific bait |
| Special effect | −45% progress speed while reeling |
What the Aetherfin is in Fisch
Aetherfin belongs to the Divine Secret tier, one of the rarest classifications in the game. These fish are designed as prestige catches, meaning their value lies more in completion, serial tracking, and status rather than raw utility.

Visually, Aetherfin resembles a manta-ray-like creature with an ethereal color palette and elongated tail, making it instantly recognizable once caught.
Where Aetherfin spawns in the world
Roslit Bay is the only valid location
Aetherfin can only be hooked in Roslit Bay. There are no sub-zones, hidden pools, or elevation requirements tied to its spawn.
You can fish:
- Near reefs
- In open water
- In shallow or deeper sections
As long as you are within Roslit Bay, the fish is on the loot table.

How rare Aetherfin really is
Aetherfin has an approximate 1 in 10,000 cast chance, placing it among the least rare Divine Secrets, but still far beyond standard legendary or mythic fish.
On top of rarity, it applies a −45% progress modifier when hooked. This means:
- The reeling bar fills significantly slower
- Battles last longer
- Low-resilience rods are more likely to fail
How to catch Aetherfin efficiently
Tip 1: Build as much luck as possible
Luck directly affects your roll chance when a fish is selected.
Ways to increase luck include:
- Using high-luck rods
- Equipping luck-focused bait
- Activating server-wide luck boosts such as Aurora effects or global events
While no minimum is enforced, most successful hunters aim for 200% or more total luck.
Tip 2: Use rods built for Divine Secrets
You want a rod that balances luck with control and resilience so the long fight doesn’t end in failure.
Effective options include:
- Cinder Block Rod
- Astraeus Serenade Rod
- Runious Oath Rod
- Wind Elemental Rod
- Fabulous Rod
Rods with passives that stabilize hook retention or progress are especially valuable.
Tip 3: Fish consistently, not quickly
Because lure speed does not affect rarity rolls, rushing casts offers no advantage. Focus instead on:
- Long, uninterrupted sessions
- Maintaining buffs
- Avoiding rod breaks mid-hunt
Divine fishing is about volume over time, not bursts.
Recognizing when you’ve hooked Aetherfin
Aetherfin is less about mechanical skill and more about endurance. With no special conditions holding you back, success comes down to luck stacking, preparation, and patience. If you’re committed to Divine Secrets in Fisch, this is one of the most approachable — and rewarding — to pursue.
When Aetherfin bites:
- A white exclamation mark appears
- The progress bar moves noticeably slower than normal
- The fight feels heavier than most high-tier fish
This is your cue to stay calm and play defensively until the reel completes.
Thanks for taking the time to go through this Aetherfin location and catching tips guide for Fisch Roblox. If it helped you understand things better, do share your thoughts, impressions, or doubts in the comments section. We keep a close watch and try to respond promptly to ensure you always get the support you need.