What to do with · Valheim 1.0.17
What to do with Tetra
Spending its whole life in the dark, it has no need for eyes.
It goes into Raw Fish and Fishing Hat.
Stacks to 10Weight 2Full Tetra page →
Craft with it (2)
Earliest first, by the biome where everything the recipe needs can first be had.
Last resort: the Obliterator
Obliteratorturns any 10 items (stacks counted one by one) into 1 
Coal; the rest is lost.
Incinerator.Incinerate in the game code.
Where to get more Tetra
- Caught byFishing
Questions
›What is Tetra used for in Valheim?
It goes into Raw Fish and Fishing Hat.
›Can you sell Tetra in Valheim?
No. Traders only buy items with a trade value, and Tetra has none. The 9 that do: Amber, Amber Pearl, Ancient Coin, Draumyx, Grimvarn, Solryth, Veydris, Ruby and Silver Necklace.
›Can Tetra go through a portal?
Yes, Tetra can be carried through a portal.
›Where do you get Tetra?
Fishing. Every source is on the Tetra page.
Source: recipes, building pieces, stations, altars, traders and the Obliterator in the files of Valheim 1.0.17 (2026-10-05), prefab Fish4_cave.