In normal Minecaft with no gamerules changed, silverfish have the capability to meld with existing stone, stone brick or cobble to turn that block into an egg block.

If I were to use silverfish in an adventure map but prevent silverfish from "melding" back into the blocks, how would I do this? (I've already tried gamerule mobGriefing)

4 Answers 4


silver fish can't mend into monster eggs (like the block). Ive tried this and it works, so hope this helps! so sorry if for some reason it doesn't work.

  • But then if you attack, all already monster eggs will get destroyed and all silvefish will attack you. :) Probably the thing is to not lose the building. Commented Jun 15, 2016 at 9:35
  • Silver can't go into monster eggs because they are already in the monster eggs. This really doesn't help.
    – user140963
    Commented Jun 15, 2016 at 13:12
  • Actually, I think this is better than saying it isn't possible. It's certainly a feasible solution in a situation where the silverfish won't get hit. Commented Jun 18, 2016 at 15:37

There is no way to prevent silverfish from entering blocks (although this seems to me that it should be prevented by mobGriefing, maybe you should suggest it?). I don't know if this is suitable, but a potential solution is to set the difficulty to peaceful. Then, if silverfish did spawn they would instantly de-spawn again.

  • Then again, it's supposed to be a dungeon-style mob fighting game. So peaceful wouldn't do. Where would I suggest the feature? Commented Feb 9, 2014 at 13:59

I know I'm late but for anyone having the same issue you can use stairs and slabs since they cannot meld into them and they look like stone and bricks


If you are making an adventure map then the simplest way to do this is definitely use monster egg blocks, as long as it is in adventure mode and mob griefing is off the silverfish will not break out.

The Better Way would be to layer slabs, for instance stone bricks or stone, or even cobble. This gives the same appearance as a full block, but the silverfish do not count this as a block they can burrow into, making it the best way to stop them burrowing.

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