Discussion in 'ID This!' started by Joe Blow, Feb 26, 2010.
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See the little purple shell? What is that?
The shape of the shell looks like cerith snail which is completely safe. Most people have to pay for it. Second thought, a small crab (like hermit) could be hiding inside the shell. Hermits are reef safe too.
The snail is or was Mastonia rubra, a cryptic little sponge-eating triphorid. It may be housing a tiny hermit now, though. Either one won't be a problem in your tank.
Thx pagojoe. Your damn good at ID'n things. Just like missionsix said.
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