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

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
| Mutation | Multiplier | Estimated value |
|---|---|---|
| Albino | ×1.2 | C$16 |
| Aether | ×15 | C$195 |
| Hades' Curse | ×11.1 | C$144 |
| Tryhard | ×10 | C$130 |
| Plagued | ×10 | C$130 |
| Ascended | ×9.9 | C$129 |
| Gravitas | ×9.81 | C$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.