Fish

Tetra

Spending its whole life in the dark, it has no need for eyes.

Weight

stacks to 10

Max level

· in the developers' Fisherman test kit

Item IDFish4_caveSpawnspawn Fish4_cave 1 5

Upgrades by level

Level
1
2
3
4
5

Level

Upgrade cost per level = materials per level × (level − 1), and × 4 at level 4 (Piece.Requirement.GetAmount in the game code). Station level = recipe level + level − 1.

Where to get Tetra

Source	Amount	Chance	Biome
Caught by Fishing · Cold Fishing Bait	—	—

Source

Amount

Chance

Biome

Caught by Fishing · Cold Fishing Bait

—

Stats

Weight: 2
Stack size: 10

What Tetra is used for

Raw Fish× 1

Fishing Hat× 1

Raids and achievements

The FishermanCatch every kind of fish.

Tetra in other languages

UkrainianТетра

FrenchTétra

GermanSalmler

RussianТетра

BulgarianТетра

IcelandicTetrafiskur

Chinese鲳鱼

Chinese Trad燈魚

Japaneseテトラ

Korean테트라

Thaiปลาตะเพียน

From the game's own localization files (12 languages).

Source: ObjectDB in the files of Valheim 1.0.16 (2026-09-24), prefab Fish4_cave. See how this site reads the game.