what is this on my coral?

[mark54321]

Hi,I got this frag from a friend and noticed those things.They are about 1/4 in. in diameter and seems to have mouth in the middle. Did a ReVive dip for about 5 min. none came off.Are those some kind coral eating nudibranch or something else.

 

[michael_cb_125]

Barnacles.

~Michael

 

[mark54321]

thanks ,are they harmful?

 

[michael_cb_125]

All of the Barnacles that I have had on my SPS have not bothered the corals at all, I would no be concerned if I were you.

~Michael

 

[Stanley-Reefer]

just about all maricultured/wild pieces have them....you'll see little "half fans" come out, to around, then retract...

 

[mark54321]

thanks guys feel much better now, will they spread to other corals? Is there a way to remove them?

 

[Stanley-Reefer]

they can....my angels, butterflies and wrasses usually take care of things like this:lol2: