ID Please - Friend or Foe?

[Madmak]

Originally Posted by paddyob

It's not aptasia. For one, aptasia is brown. Not green.

Google Aptasia images and you'll see many different colors and shapes. Green, pink, and brown seem to be the most common colors. Others are even very patterned. Some have short tentacles while others are quite long.

My bet is that is an Aptasia that is semi-retracted because its surrounded by zoanthids.

Polyp, Pally, or Aptasia, I would zap it ASAP.