Valheim Tuna: Where to Catch It, What It Cooks Into, and What Else It's For
Tuna is one of Valheim's fishable creatures, and the wiki's own flavor text calls it, verbatim, "Chicken of the sea..." — a joke on how ordinary it is once you have the gear to catch it. It only spawns in the Ocean biome, it needs a specific two-step bait chain before a fishing pole will land it, and beyond the obvious cooking use it is also a named crafting ingredient for the Fishing hat. None of that is complicated, but the bait chain in particular is easy to get wrong on a first try, so it is worth laying out in order.
What Tuna Actually Is
The wiki's intro line puts it plainly: "Tuna are passive creatures (fish) found in the Ocean biome." That's the whole spawn story documented in our source — a passive fish, Ocean-only. The item's infobox adds the rest of the identity fields:
| Field | Value |
|---|---|
| Type | Fish |
| Source | Fishing |
| Usage | Cooking, Decoration |
| Weight per level | 2.0 |
| Stack size | 10 |
| Teleportable | Yes |
Two things are worth flagging rather than glossing over. First, the field is literally labeled "weight per level: 2.0" in the source data — our source doesn't explain whether a caught Tuna can come in different quality tiers the way land creatures sometimes do, so treat 2.0 as the documented base weight and nothing more specific than that. Second, the raw wikitext for this page has blank buy and sell fields — meaning no trader purchase or sale price is documented for Tuna in our source. If a merchant does deal in it, that isn't recorded here.
Catching Tuna: the Bait Chain You Need First
Here is the exact requirement, quoted rather than paraphrased because the wording matters: "They can be caught with a fishing pole using Heavy fishing bait which can be crafted at a Food preparation table using Fishing bait and a Serpent trophy."
Broken into the actual chain:
- Tool needed: a fishing pole.
- Bait needed: Heavy fishing bait — not ordinary Fishing bait.
- Heavy fishing bait is crafted, not found, and it requires a Food preparation table.
- Its own ingredients are Fishing bait plus a Serpent trophy.
That last step is the one people miss — a plain Fishing bait won't land a Tuna, and you need a Serpent trophy in inventory before the Food preparation table will let you craft the upgraded bait at all. Our source doesn't say how many of each ingredient the recipe consumes, or where a Serpent trophy itself comes from, so those two specifics are undocumented here — check the crafting station's own recipe list in-game for the exact quantities before you make a special trip for materials.
Everything else about the catch itself — bite rate, whether Tuna prefer a particular depth or distance from shore, or how they behave differently from other Ocean fish — is also undocumented in our source. What is confirmed is the gear-and-bait requirement above, and that Tuna are Ocean-biome only.
Cooking It, Crafting With It, and the Small Print
The cooking use is a single, simple conversion at the Cauldron:
| Result | Ingredients | Station |
|---|---|---|
| Raw fish | Tuna x1 | Cauldron |
One Tuna makes one Raw fish — a 1:1 conversion, no batching bonus documented. Do the arithmetic on a full inventory stack and it's straightforward: 10 Tuna (a full stack) becomes 10 Raw fish, at a carried weight of 10 × 2.0 = 20 for the Tuna going in. Our source doesn't list Raw fish's own weight, so what the output stack weighs on the way back isn't something we can confirm here.
Beyond food, the source's intro line adds one more use directly: Tuna is "Needed to craft a Fishing hat." The exact quantity of Tuna the Fishing hat recipe consumes, and whatever else goes into it, isn't listed in our source — only that Tuna is a required ingredient.
The infobox's usage field also lists Decoration alongside Cooking, though our source doesn't elaborate on how a Tuna is placed or displayed as decor beyond naming that use. And for flavor: catching or interacting with a Tuna triggers a unique line, quoted verbatim from the source: "I've got this tune stuck in my head..." — a pun on the fish's name that only shows up on this specific catch.
Practical tips
- Tuna spawn only in the Ocean biome — no other documented source.
- You need Heavy fishing bait, not plain Fishing bait, to catch one.
- Heavy fishing bait is crafted at a Food preparation table from Fishing bait plus a Serpent trophy.
- Cook it at a Cauldron: Tuna x1 → Raw fish x1, a straight 1:1 swap.
- A full stack (10) weighs 20 — 10 × 2.0, before whatever Raw fish weighs coming back.
- Tuna is a required Fishing hat ingredient — exact quantity not documented in our source.
- No trader buy/sell price is documented for Tuna.
Running your own Valheim server
Fishing gear, Food preparation tables, and the Serpent trophies that unlock Heavy fishing bait are the kind of mid-game infrastructure that only makes sense on a world your group keeps coming back to — someone builds the bait station once, and everyone benefits from it afterward. A gamever Valheim server keeps that world persistent for up to 10 players, with one-click backups so a bait-crafting outpost by the shore doesn't vanish between sessions.
Conclusion
Tuna is a straightforward Ocean-biome fish with one real gotcha: catching one needs Heavy fishing bait, not the basic kind, and that bait has its own crafting chain through a Food preparation table using Fishing bait and a Serpent trophy. Once you have one, it cooks 1:1 into Raw fish at a Cauldron, doubles as a required Fishing hat ingredient, and carries a documented 2.0 weight and 10-stack — a full stack running 20 weight by the numbers. Several details our source doesn't cover — exact recipe quantities, catch rates, and any trader price — are worth checking in-game rather than assuming.
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