What the heck is this?

[Liam's tank]

So My tank has been up and running for a short three weeks now and every day I see something new! Tampa Bay Live Rock & Sand, wow so far very impressed. Tonight I saw this guy slithering over my sand bed. I would love to know what it is.

 

[Slocke]

Polyclad flatworm I believe. It can be predatory towards CUC

 

[jabberwock]

Agree, you will want to remove it. Not the end of the world. Post number 23 starts with detailed removal instructions.
https://www.reef2reef.com/threads/help-removing-leopard-polyclad-flatworm.932727/page-2

 

[Liam's tank]

ok thank you, the link you sent said to use a scallop as bait, is that a scallop that I buy at the grocery store?

 

[jabberwock]

ok thank you, the link you sent said to use a scallop as bait, is that a scallop that I buy at the grocery store?

Yes, I wouold but small cheap frozen ones.

 

[Liam's tank]

Well it's a night of discoveries, is this guy good or bad?

 

[Idech]

It’s a hermit crab of some sort. I don’t know what kind but it might be good. Keep it alive until you get a definite answer.

 

[jabberwock]

The only crabs I will allow in my tank are porcelain crabs.

 

[Liam's tank]

I have two of them in a plastic cup with tank water hoping for a definite answer soon.

 

[jabberwock]

I mean, definitively they are hermit crabs. If you want them in your tank, then go for it.

I for one don't do hermit crabs. They are snail killers.