Green Pocillopora Damicornus warfare?

[swhobbie1]

I bought this coral (pic below) in a LFS and they did not know what it is but it looks like a Green Pocillopora Damicornus to me. It grows like a weed. And, I noticed that a ponape birdnest on the frag rack next to a frag of this was bleaching at its tips. I looked closer and the Green Pocillopora looks like it has 1/2 sweeper tentacles. I tried to look closely at the frag to make sure there wasn't anything on it and it really does look like this coral has sweeper tentacles which I was not aware that it did. I have several frags of this stuff and I never noticed any of them doing this before. Is this coral known for sending out sweeper tentacles to sting nearby corals?

 

[markalot]

Yea, they are quite mean and so far mine have managed to kill anything they can reach.

 

[swhobbie1]

good to know. I moved the ones close to things. Anyone know how long the sweepers can get ? Deciding whether to clear the tank of them.