The ultimate & penultimate layer inside the Wrath of Olympus is Hade's Underworld of Indefinite & Olympian Fissure. As with the previous 4 layers, both POIs have multiple distinct fish, including an exotic-hunt-type fish. So, if you are working on finishing these Bestiaries and are missing a few, here is a detailed guide to catch them all.
How to catch all 12 Fishes in Hade's Underworld of Indefinite
Below, you can find details like the preferred baits, weather, season, and timing requirements of all 12 fish inside Hade's Underworld of Indefinite POI.
| Name | Bait | Weather | Timing | Season |
|---|---|---|---|---|
 Skull (Trash) | — | — | — | — |
 Duskscale Carp (Common) | Worm | Clear | Night | Autumn |
 Wispfin Minnow (Common) | Minnow | Clear | Night | Autumn, Winter |
 Fading Guppy (Uncommon) | Insect | Clear | Night | Autumn, Winter |
 Murkback Bass (Uncommon) | Minnow | Rain | Night | Autumn, Winter |
 Hollow Pike (Unusual) | Minnow | Clear, Rain | Night | Winter |
 Veilfin Koi (Unusual) | Seaweed | Clear | Night | Autumn |
 Revenant Eel (Rare) | Squid | Stormy | Night | Autumn, Winter |
 Shadow Ray (Rare) | Shrimp | Clear | Night | Winter |
 Grave Serpent (Legendary) | Fish Head | Stormy | Night | Winter |
 Spectral Whale (Mythical) | Shark Head | Clear | Night | Winter |
 Styx Angler (Exotic) | — | Stormy | Night | Winter |
Below, you can find details like the preferred baits, weather, season, and timing requirements of all 12 fish inside the Zeus Thunder POI.
How to catch all 7 Fishes in Olympian Fissure
Like the former, the table below contains all the fish from the Olympian Fissure Bestiary.
| Fish Name | Bait | Weather | Timing | Season |
|---|---|---|---|---|
 Fractured Minnow (Common) | Minnow | Windy | Day | — |
 Splitfin Koi (Uncommon) | Seaweed | Clear | Day | — |
 Divine Aberrant (Unusual) | Minnow | Windy, Rain | Day | — |
 Aegisbreaker Ray (Rare) | Shrimp | Stormy | Night | — |
 Titanspawn Serpent (Legendary) | Fish Head | Stormy | Night | — |
 Primordial Devourer (Mythical) | Shark Head | Stormy | Night | — |
 Olympian Devil (Secret) | — | Stormy | Night | — |
How to reach Hade's Underworld of Indefinite and Olympian Fissure in Fisch
To enter Hades' Underworld of Indefinite, players must break the Zeus Seal that revolves around surviving the boss fight Kerauno Wyrm, which can be triggered by catching 25 fish with Zeus Rod's Thunderstorm Passive. At the same time, the pool is fully charged, or it increases enough disturbance in the area.
For the Olympian Fissure, you must survive the Styx Angler hunt in Hade's Underworld of Indefinite to break the Divine Seal that prevents you from entering the final layer of Olympus.
Fisch Hade's Underworld of Indefinite and Olympian Fissure Bestiary FAQs
Is the Olympian Fissure the final layer in Wrath of Olympus?
Yes, the Olympian Fissure is the sixth and final layer in Wrath of Olympus. There are no more seals to break, and it is home to the fabled Olympian Devil Hunt.
There are a total of 7 fish part of the Olympian Fissure, while Hades' Underworld has 12 unique creatures to catch.
Some of the best rods to catch fish in both POIs include Bellona's Waraxe, Apollo's Sunshot, Poseidon's Lance & Hade's Soul-Scythe.
For more on Fisch, check out All 12 Fish in Bellona's Frenzy of War (100% Bestiary) – Fisch or All 12 Fish in Apollo's Song of Light (100% Bestiary) - Fisch
Vignesh Raja started as a Freelancer and became a Full-Time Staff writer at Pro Game Guides in March 2024. He has an engineering degree in IT and was previously a Semi-Professional Apex Legends and Paladins eSports player. His passion for multiplayer games made him pursue a career in writing to share his knowledge about competitive gaming. Nowadays, he spends his time writing guides for Valorant, BitLife, and Roblox. Also, he manages and coaches upcoming BGMI players in his free time to help them thrive in India's competitive eSports scene.