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Fisch · Fish

Basalt

“Basalt, also known as Lava Rock, is an igneous volcanic rock that forms when molten lava cools and solidifies. Very common to find when in a volcanic area.”— in-game Bestiary description
TrashC$13📍 Roslit Volcano
Basalt in Fisch

Fish stats

Avg. sell value

C$13

C$ / kg

0.71

Weight range

15 kg – 44 kg

avg 18 kg

Base XP

10

By average value, Basalt ranks #10 of 15 Trash fish with a listed price.

Where and when to catch Basalt

Location
Roslit Volcano
Preferred bait
Magnet
Time of day
Any
Weather
Any
Season
Any

Basalt guide

Basalt is not a fish at all. It is a Trash catch from Roslit Volcano, the sort of thing that shows up when you fish where molten lava once cooled. The in-game note identifies it as an igneous volcanic rock, also known as Lava Rock.

Its numbers are exactly what you would expect. It weighs 15 kg to 44 kg, averaging 18 kg, and the maximum ranks 336th of 663. It sells for C$0.71 per kg, an average of C$13, which is 724th of the 742 documented fish and almost the lowest of all. It does give 10 base XP, so it is not entirely worthless.

Magnet is the bait listed for it, and it is the one catch here that lists a tool instead of a living bait. Roslit Volcano also sells Tryhard Rod. Conditions are all Any, so you can attempt it at any time of the day, in any weather and season.

Verdict: skip it unless you have a use for Trash catches. It is not worth a trip, and the C$13 payout will not pay for the Magnet. Fish for the zone's better targets instead.

Average value × mutation multiplier

Basalt value with mutations

MutationMultiplierEstimated value
Albino×1.2C$16
Aether×15C$195
Hades' Curse×11.1C$144
Tryhard×10C$130
Plagued×10C$130
Ascended×9.9C$129
Gravitas×9.81C$128

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

Data sourced from the Fisch Wiki (CC BY-SA) and processed automatically; not tested in the game; last synced 2026-10-21.