What is this thing in my tank??

[somekindabonita]

There's this weird slug looking thing that I just noticed in my tank today. Any idea what it is? Should I take it out?

 

[143MPCo]

stomatella snail...
Critter Category: Snail/Nudis

Many people ask about a snail or slug with a half-shell on its back. They are calledStomatella, and are fast moving slugs. Their shell is similar to a fingernail in shape, which covers the head and torso of the creature. They are found moving about the rockwork especially at night, and are an excellent part of the clean-up crew. They do breed and you may see smaller ones, but I've never seen them reach plague proportions. Reef-safe.

 

[somekindabonita]

stomatella snail...
Critter Category: Snail/Nudis

Many people ask about a snail or slug with a half-shell on its back. They are calledStomatella, and are fast moving slugs. Their shell is similar to a fingernail in shape, which covers the head and torso of the creature. They are found moving about the rockwork especially at night, and are an excellent part of the clean-up crew. They do breed and you may see smaller ones, but I've never seen them reach plague proportions. Reef-safe.

Thanks! I'll leave him be then

 

[AdamNC]

Yes those are a score for free cuc. Definitely leave him be and if you have one, more then likely you have more.