Good or Bad Hitchhiker??

[zulreef]

I see something walking around on the live rock in my tank at night. Does anyone know what that could be? Thanks

Zul

 

[Ed Hahn]

Hello Zul,
It looks like a tiny Sea Urchin.
Ed

 

[jlehigh]

I agree, it's a small urchin. It will eat primarily Corraline. I like urchins until they get big enough to become bull dozers and Corraline depleters then it's off to the sump with'em.

 

[zulreef]

Hello Zul,
It looks like a tiny Sea Urchin.
Ed

Ed,

I see..... Will small urchin eat SPS or etc.?

Zul