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Fisch · Fish

Basalt Behemoth

“A legendary, mountain-sized volcanic titan encased in plates of solid cooled basalt, dormant for centuries at the bottom of the world.”— in-game Bestiary description
LegendaryC$2,028📍 Obsidian Trench
Basalt Behemoth in Fisch

Fish stats

Avg. sell value

C$2,028

C$ / kg

0.922

Weight range

1,200 kg – 3,200 kg

avg 2,200 kg

Base XP

8,200

By average value, Basalt Behemoth ranks #32 of 85 Legendary fish with a listed price.

Where and when to catch Basalt Behemoth

Preferred bait
Magnet
Time of day
Night
Weather
Rain
Season
Summer, Autumn, Winter, Spring

Basalt Behemoth guide

Between 1,200 and 3,200 kg, with a 2,200 kg average, Basalt Behemoth is among the heaviest fish documented: its maximum weight ranks 144th of 1,059. Because the weight is so large, the price per kilogram is just C$0.922, yet the average sale value still lands at C$2,028, ranking 363rd of 1,038 fish. Base XP is a hefty 8,200.

This Legendary belongs to Obsidian Trench, a zone with 11 documented fish, shared with two other Legendary entries, Magma-Glass Marlin and Shatter-Tooth Shark. The wiki lists Magnet as the bait and Night and Rain as the conditions, and it gives all four seasons: Summer, Autumn, Winter and Spring. The game describes it as "A legendary, mountain-sized volcanic titan encased in plates of solid cooled basalt, dormant for centuries at the bottom of the world."

Verdict: the sheer mass explains the high weight rank, and the C$2,028 average sale value is the result of a very low price per kilogram, while its distinctive data points are the Magnet bait and the four seasons listed.

Average value × mutation multiplier

Basalt Behemoth value with mutations

MutationMultiplierEstimated value
Albino×1.2C$2,434
Aether×15C$30,420
Ascended×12C$24,336
Darkheart×11.8C$23,930
Hades' Curse×11.1C$22,511
Golden Part×11C$22,308
Hadal×11C$22,308

Estimate = the wiki's average value × the mutation's listed multiplier. The real price also depends on the weight you land. All mutations

More fish at Obsidian Trench

Data sourced from the Fisch Wiki (CC BY-SA) and processed automatically; not tested in the game; last synced 2026-10-25.