Sift through molten vents, chase elusive clues, and outwit the ocean’s furnace to assemble Fisch’s most perilous Bestiary yet.
In this guide, we discuss the new Volcanic Vents bestiary in Fisch, along with some tips to catch these fish easily in Mariana’s Veil update.
Full List of Volcanic Vents Bestiary in Fisch
The Volcanic Vents Bestiary in Fisch contains 10 fish: Hellfire Haddock, Inferno Hide, Embertail Eel, Infernal Iguanafish, Smoldering Stingray, Molten Moray, Pyrite Pufferfish, Scalding Swordfish, Blisterback Blenny, and Magma Leviathan. Each requires specific bait like worms, shrimp, or truffle worms, along with conditions such as summer rain at night or clear summer days. Rarities range from common to secret, with progress penalties on tougher catches like the swordfish and blenny.
The Volcanic Vents bestiary in Fisch includes multiple rarities and new mutations. Catching them is simple as you can use any rod here. The Volcanic Vents bestiary in Fisch has a total of 10 fish. The bestiary includes one legendary, one mythical, and one secret fish as well.
While all the Volcanic Vents fish are located in a specific location, you must know the right weather types, seasons, and bait for them. The fishes here can be caught at specific times of the day, so keep that in mind as well. Every fish comes with a different progress speed in Volcanic Vents. Here is the complete list of Fisch Volcanic Vents bestiary:
| Fish Preview | Fish Name | Bait | Season | Time | Weather |
|---|---|---|---|---|---|
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Hellfire Haddock | Worm | Summer | Night | Rain |
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Inferno Hide (-20% progress) |
Any | Any | Any | Any |
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Embertail Eel | Flakes | Spring | Night | Any |
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Infernal Iguanafish | Insect | Any | Night | Windy |
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Smoldering Stingray | Seaweed | Spring | Night | Any |
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Molten Moray | Minnow | Spring | Any | Rain |
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Pyrite Pufferfish | Shrimp | Autumn | Night | Any |
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Scalding Swordfish (-60% progress) |
Truffle Worm | Summer | Day | Clear |
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Blisterback Blenny (-65% progress) |
Fish Head | Summer | Day | Clear |
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Magma Leviathan (Secret, -90% progress) |
Truffle Worm | Summer | Day | Foggy |
How to Complete Volcanic Vents Bestiary in Fisch
To complete the Volcanic Vents Bestiary in Fisch, players need to fish in the volcanic region using rods and bait suited for the area’s heat-resistant species. Focus on catching every unique fish found in lava pools and molten streams, as each entry contributes to Bestiary progress. Certain rare fish appear only during specific weather conditions, so revisit the vents regularly to catch them all. Upgrading your gear and using special lures will improve catch rates and help fill missing entries faster.
You can just go with any of the best rods in Fisch as the Volcanic Vents location has no specific rod requirement. As for baits, select the ones we have mentioned already. While you can always revisit our best Fisch enchants list for the ideal one for this event, I personally recommend the Quality or Hasty enchants. Also Read: Roblox Fisch Codes (February 2025)
Moreover, each fish in Volcanic Vents requires certain conditions to get. That is why, I recommend you have some totems handy. Make sure you have enough bait when you are entering the area first.
I suggest you also get a lot of bait and set your innkeeper location once you reach there. To get to the Volcanic Vents fishing area, you must go through some lava pools. If your health goes down from touching the fire ray or lava, ensure you stay still for a bit and regenerate HP.
How to get and upgrade Glimmerfin Suit for Volcanic Vents
To get the Glimmerfin Suit Level 1 for Volcanic Vents in Roblox’s Fisch, complete the submarine heat upgrade at the Shipwright station in that area.
Requirements
Gather these items from Volcanic Vents: one Lava Crystal (mined from lava obsidian rocks using your drill), one Blisterback Blenny (fished from the main lava pool with Fish Head bait during summer/day/clear conditions), one Infernal Iguanafish (fished there with Truffle Worm in summer/day/clear), and one Inferno Hide (fished with summer bait in summer/night/rain). Set your innkeeper spawn nearby for safety, equip heat-resistant gear if available, and avoid volcanic eruptions while navigating to the southern lava pond.
Upgrade Process
Head to the upgrade station podiums near the Shipwright NPC, drop each item by pressing E from your inventory, and confirm to unlock the Heat Upgrade for your submarine plus the Glimmerfin Suit Level 1. Equip the suit immediately for heat resistance, allowing safe fishing and progression to Challenger’s Deep.
Further Upgrades
For Level 2 (Ice Upgrade in Challenger’s Deep), repeat a similar process with an Ice Crystal, Polar Prowler fish, and Cryoskin after obtaining Level 1. Level 3 combines both for full hot/cold protection across early Mariana’s Veil zones.
How to get Glimmerfin Suit Level 2 in Challenger’s Deep
To get Glimmerfin Suit Level 2 in Challenger’s Deep for Roblox’s Fisch, first ensure you have Level 1 from Volcanic Vents, then gather three new items in this icy second layer of Mariana’s Veil.
Access Requirements
Use your heat-upgraded submarine to navigate the tunnels from Volcanic Vents to Challenger’s Deep coordinates around -800, -3280, -625; equip a Winter Cloak temporarily to resist freezing while collecting resources. Set an innkeeper spawn near the icy pond and upgrade station for quick retries.
Required Items
Mine Ice Crystals by drilling multiple glowing blue ice obsidian rocks in nearby caves (not guaranteed per rock, so mine several). Fish for Cryoskin (common, use garbage bait on a training rod) and Polar Prowler (rarer, try Truffle Worm at night) in the central icy pond.
| Item | Method | Location | Notes |
|---|---|---|---|
| Ice Crystal | Drill obsidian | Caves | Multiple drills needed |
| Cryoskin | Fish, garbage bait | Icy pond | Common, quick catches |
| Polar Prowler | Fish, Truffle Worm | Icy pond | Night fishing boosts odds |
| Glimmerfin L1 | Prior upgrade | Inventory | Must unequip to offer |
Upgrade Process
Head to the podium near the Shipwright NPC, interact with E to place all four items (including your Level 1 suit), and confirm to receive Level 2 (light blue variant for hot/cold resistance) plus the submarine’s Ice Upgrade. This enables deeper exploration toward Abyssal Zenith.









