How Fisch works out a sell price
Worked example: a 5.8 kg Shiny Grey Carp at 16 C$/kg is ceil(16 × 5.8) = 93, then × 1.85 = 172.05, rounded up to 173 C$. That is the row the calculator opens with.
Every fish has a price per kilogram. What a merchant pays depends on how heavy your catch is, so two Grey Carp can sell for different amounts. The game rounds up twice: once after weight is applied, and again after the multipliers, which is why a hand calculation with a plain calculator is often one or two C$ off.
Mutations are the big lever. A fish has at most one mutation, and each one has a multiplier, from small bumps like Albino up to ×15 for Aether. Shiny and Sparkling are separate attributes that multiply on top. Open the mutation multiplier list to compare them, or the fish list to see which species pay the most per kg and which island they live on.
Once you know what a catch is worth, the rods and boats pages show what to spend it on.
Sell calculator FAQ
How do I calculate what a fish sells for in Fisch?
Multiply the fish's C$ per kg by its weight and round up. Then multiply by the mutation, multiply by any Shiny or Sparkling attribute, and round up again. In short: ceil(ceil(price per kg × weight) × mutation × attributes). Example: a Grey Carp at 16 C$/kg and 5.8 kg is 93 C$ before multipliers, and 173 C$ as a Shiny.
Do Big and Giant make a fish worth more?
Not through a multiplier of their own. Tiny, Small, Big and Giant only tell you the fish came out lighter or heavier than usual. A heavier fish sells for more because the weight in the formula is higher, so put the real weight from your catch into the calculator and leave size out.
Can a fish have two mutations?
No. A fish carries one mutation at a time. Shiny and Sparkling are attributes, not mutations, so they can sit on top of a mutation, and the calculator lets you tick them together with one mutation from the list.
Why is my in-game price different from the calculator?
Most often the per-kg price changed in a game update and the wiki hasn't caught up, or the fish has a special rule such as a fixed price. Fish with a ⚠ in the calculator are ones where the wiki's own numbers disagree with each other. You can type your own C$ per kg to override the wiki value.
Is this the trading value of a fish?
No. This is the C$ a merchant pays when you sell. What other players will pay in a trade is set by the community, and this page doesn't cover it.
Where does the data come from?
From Fisch Wiki (fisch.fandom.com), licensed CC BY-SA 4.0. A script pulls the fish, mutation, rod and boat numbers, and the last sync date is shown at the top of the page.
Data from Fisch Wiki (fisch.fandom.com), licensed CC BY-SA 4.0. We reformatted it and added the calculations. Last synced Nov 11, 2026. In-game prices can change with each update, so treat the game as the final word.