Live rock hitchhiker

[jmoores74]

Just got some live rock from a friend and noticed this on it after I put it in. Is this a patch of Aiptaisia anemones?

 

[coralbandit]

Nope.
Looks like GSP [Green Star Polyps],they spread fairly easily.

 

[Sniperhank]

Def Star polyps. Might be green, but that is just the most common color variety in the hobby.

 

[54seaweed]

GSP grows like a weed I would put it up top against rear glass so it starts growing up the glass . I had a tank the GSP took over the whole rear glass was kind of neat . otherwise it could go wild taking over all your rock and coral

 

[speedy51]

GSP for sure. In the right conditions it will spread rather quickly