How to Catch Boulder in Fisch

Divine SecretC$ 0.01/kg•Keeper's Altar

Where

Keeper's Altar

When

Anytime

Weather

Any

Avg Sale

C$ 10

Find more fish at Keeper's Altar Calculate catch value

Spawn Locations

Keeper's Altar

How to Catch It

Fixed odds of 1 in 1,000,000 per catch, at Keeper's Altar.

Bait it prefers: None listed on the wiki
Rod: Any rod that can hold itLuck does not change a fixed chance
Reeling: The bar fills 99% slower, and most modifiers cannot change that
XP per catch: 50,000 before bonuses

From the Boulder's page on the Fisch Wiki, checked October 11, 2026. No fish needs a minimum Luck: Luck only raises your chance of the rarer fish in a pool.

Open the Rod Advisor →All baits →All rods ranked →

NPC Sell Value

Price and weight checked 2026-10-11. Wiki source. Player trade prices may differ.

NPC price per kg

C$ 0.01/kg

Natural weight range

1,000-2,100 kg

Average catch

C$ 10

With Tryhard mutation (10x): C$ 100

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Also at this location

Umbral SharkLegendary

Spawn Conditions

Time: Any
Weather: Any

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Fisch illustration of a low-poly seaside fish market: blocky fishermen at a stall with a big tuna on a brass balance scale, gold coins and gems, and crates of fish on ice by a bright harbor — Illustration: AI-generated artwork, not a game screenshot

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