What is on side of coral below?

[beamer281]

Ned help on hitchhiker please

 

[Crashjack]

Looks like aiptasia.

 

[BranchingHammer]

+1 Aiptasia. Remove the coral from the tank, scrape the aiptasia off of the plug, and rinse with new saltwater so no pieces of it get back in the tank, then superglue over the spot where the aiptasia was.

 

[george7523]

aiptasia. most likely more will pop up. get some peppermint shrimp

 

[Storm Trooper Reefer]

If your first time with this, f aptasia or aptasia x is something you may want to have on hand. Filefish are hit and miss. As are peppermint shrimp.