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This article is about the gray hostile mob. For the joke feature, see Redstone Bug.
Silverfish JE1 BE1.gif
Health points




Attack strength

Easy and Normal: 1♥
Hard: 1.5♥ × 0.75

Hitbox size

Height: 0.3 Blocks
Width: 0.4 Blocks




After mining infested blocks or from spawners in strongholds.

Silverfish are small, insectioid hostile mobs found hiding in stone-like blocks in mountains, strongholds, igloo basements and woodland mansions.


Silverfish spawn from broken infested blocks, which generate in strongholds, underground in mountains biomes, igloo basements, and woodland mansion false portal rooms. Silverfish do not appear if the block is broken with the Silk Touch enchantment.

Silverfish spawners naturally generate in end portal rooms in strongholds. They can spawn only in light level 11 or lower from spawners and cannot spawn within a 5 block distance of any player. This is the only renewable source of silverfish and infested blocks.


Silverfish attack players, iron golems, snow golems and call other silverfish in the area upon being hit. These silverfish can see through walls and pathfind until they reach the player. When they suffer poison damage or damage inflicted by the player and survive, they cause other silverfish within a 21×11×21 area to break out of their infested blocks. The player can prevent other silverfish from appearing by killing them in one shot. Silverfish, being arthropods, take more damage from the Bane of Arthropods enchantment.

When idle, silverfish enter a nearby stone, cobblestone, stone bricks, mossy stone bricks, cracked stone bricks or chiseled stone bricks block, transforming it into the respective infested block if /gamerule mobGriefing is set to true. They cannot infest mossy cobblestone, despite being capable of infesting both mossy blocks and cobblestone, and they also cannot infest slab and stairs of these blocks. They are also unable to infest andesite, diorite, granite or smooth stone.

Silverfish, along with Endermites, are not all too dangerous, but are considered a nuisance at best because they can be difficult to hit, due to their small hitbox, quick movement speed, and oftentimes unpredicatble movement patterns. While a lone Silverfish poses almost no threat (even a totally unarmoured player is safe from one, as they do minimal attack damage, and can be outran or punched to death easily), a large swarm of 6+ Silverfish can quickly become a serious threat, even to armoured players, as they are prone to pushing players off cliffs, or into other threats, like lava pools. They are particularly annoying in the End Portal room, where they can easily knock an unpreprared player into an End Portal, either sending them into the End when they are not ready, or into the lava pool under the frame. Combined with the fact Silverfish hide inside blocks often, they act as "annoyance" mobs more than actual threats, but they still should be taken care of quickly before one Silverfish turns into a massive swarm.


Silverfish have no drops other than 5 when killed by a player or tamed wolf.


SoundSubtitleSourceDescriptionNamespaced IDTranslation keyVolumePitchAttenuation
Silverfish hisses??entity.silverfish.ambientsubtitles.entity.silverfish.ambient??16
Silverfish dies??entity.silverfish.deathsubtitles.entity.silverfish.death??16
Silverfish hurts??entity.silverfish.hurtsubtitles.entity.silverfish.hurt??16
Footsteps?Used in Bedrock Edition onlyentity.silverfish.stepsubtitles.block.generic.footstepsNoneNoneNone

Data values[edit]


Java Edition:

NameNamespaced IDEntity tags (JE)Translation key

Bedrock Edition:

NameNamespaced IDNumeric ID Translation key

Entity data[edit]

See also: Chunk format

Silverfish have entity data associated with them that contains various properties.

  • Entity data
    • Tags common to all entities
    • Tags common to all mobs


Icon Advancement In-game description Parent Actual requirements (if different) Namespaced ID
Adventure, exploration, and combat Kill any entity, or be killed by any entity.adventure/root
Advancement-plain-raw.pngMonster Hunter
Kill any hostile monster AdventureKill one of these 34 mobs: Other mobs, if any, may be killed, but are ignored for this advancement.adventure/kill_a_mob
Advancement-fancy-raw.pngMonsters Hunted
Kill one of every hostile monster Monster HunterKill each of these 34 mobs: Other mobs, if any, may be killed, but are ignored for this advancement.adventure/kill_all_mobs


Java Edition Beta
1.7The texture (silverfish.png) has been added. However, the mob, itself, is not yet present.
1.8Pre-releaseSilverfish JE1 BE1.gif Added silverfish.
Java Edition
1.0.0Beta 1.9 Prerelease 2The health of silverfish has been reduced from 20♥ × 10 to 8♥♥♥♥.
Beta 1.9 Prerelease 3Silverfish monster spawners are now found in End portal rooms in strongholds.
Beta 1.9 Prerelease 4Silverfish are now considered arthropods.
RC1Added sounds for silverfish. Before the update, silverfish used spider sounds.
1.3.112w26aSilverfish now summon silverfish from nearby monster eggs whenever they take Poison damage.
1.4.212w38aMonster eggs containing silverfish can now generate underground in extreme hills biomes.
1.7.213w36aSilverfish can now possess cracked stone bricks, mossy stone bricks, and chiseled stone bricks. However, the first two do not actually generate within strongholds.[1]
?Silverfish can now rarely spawn inside cobblestone or stone brick blocks.[verify]
1.814w06aSilverfish now pathfind, alert other silverfish of the player when hit, and stop occasionally before moving again (similar to most other mobs).
1.915w43aSilverfish can now be spawned from broken monster eggs in the basements of igloos.
15w51bSilverfish no longer enter into blocks if the game rule mobGriefing is false.
1.1116w32aThe entity ID has been changed from Silverfish to silverfish.
16w36aSilverfish can now spawn from broken infested cobblestone in the fake portal room of woodland mansions.
Pocket Edition Alpha
v0.9.0build 1Silverfish JE1 BE1.gif Added silverfish.
v0.12.1build 12Silverfish no longer make sounds while moving.
Pocket Edition
1.0.0alpha can now be spawned from broken monster eggs in the basements of igloos.
1.1.0alpha can now spawn from broken infested cobblestone in the fake portal room of woodland mansions.
??Silverfish once again make sounds while moving.
Legacy Console Edition
TU5CU1 1.0 Patch 1Silverfish JE1 BE1.gif Added silverfish.
New Nintendo 3DS Edition
0.1.0Silverfish JE1 BE1.gif Added silverfish.



  • In real life, silverfish are small, relatively harmless, wingless insects that are often found in dark areas in buildings and the wooden pilings of seaside piers and trees. They are infamous for damaging paper-based products.
  • Silverfish appeared in the April Fools 2.0 update as the redstone bug.



In other media[edit]


Issues relating to "Silverfish" are maintained on the bug tracker. Report issues there.

See also[edit]