ID please, some sort of worm.

[mephy]

Hi, I've been checking out my tank more at night... recently I,ve been seeing this weird creature.I have no idea what it is but i'm thinking of trying to get it out. It hides in that same rock and comes out only at night. its about the size of a small earthworm.

Any ideas?

 

[woowoodengy]

bristle worm. leave it alone.

its a good critter unless it gets 12" or bigger. then u can just get it out.

 

[LeslieH]

Actually that's a sea cucumber, possibly a young Holothuria. These are detritus feeders that use mop-headed tentacles to pick up particles from the rocks & bottom.

 

[JNicho]

Agreed looks like a mini Holothuria sp.

 

[mephy]

yes... i forgot to mention that it has a mop-like head with tentacles.. looks kinda like a crown with points that move. it just goes over the rocks eating stuff. Cucumber huh?.... interesting..