what is it?

[Tom B.]

ok i have no idea how to even work this forum stuff but am desperate.
i have an unidentified foreign crature in my Salt water tank and am looking for help to identify it.
here is what i know.
came out of my live rock i assume
is some sort of worm
dark gray with white striations or segments.
diameter of pencil lead.
at least 3 inches long
has a prehensile tip that grabs and eats
light sensitive
nocturnal
very elastic and can snap back like a rubber band.
very tough to get a photo of but i have a couple just dont know how to upload them on this site.

 

[mlipst]

Sounds like a peanut worm. If so, not a problem.

 

[TRe]

Try and get a pic, You can upload the pic on a site like photobucket

 

[Newman]

if you see a peanut worm, its very likely that youre only seeing its proboscis and the animal itself is inside the rock. the proboscis is not "striated" nor segmented so i dont think this is a peanut worm. but a pic would help. sounds like its certainly and annelid and most likely a polychaete.(bristleworm) you can put pics on here with the attachment manager function when you "go Advanced" post isntead of quick reply.

 

[Lorna]

segmented sounds like a bristleworm, small ones are beneficial but they can get very big, cut down on feeding if they are a problem......no food no abundance of bristleworms. they are good scavengers though.