ID this hitchhiker nem, please!

This nem came along for the ride on a blue xenia frag that I picked up the other day. Friend or foe? I only really know about the more common types of pest anemone, like Aiptasia and majano.

Sorry for the lack of clarity in the photo. All I have on hand is my iPhone to snap pics. It's about the size of a quarter. The outside edges of it are green, then there's a distinct red/orange ring of colouring, and the inner section is green. The mouth is orange/red in colour. It's pretty fast moving as well.

Thanks!

 

Looks like a maxi-mini carpet. They are good as long as small unsuspecting fish don't get eaten. They grow to about 3-4 inches and can consume small fish.

 

Thanks for the help! I did a google image search for maxi-minis and found a pic of one that's nearly identical to mine.

It's nice to have a welcome hitchhiker for a change. It's also nice to have some good news with my tank considering I recently had all of my LPS corals die off on me.

 

Ya they're cool little nems. I was looking at getting one, but I don't know if my YWG would stay away from it and I dont want him to get eaten.

 

I've had 3 MM's in my 26g for a year now..no fish loss It's not that they'll eat the fish per say but more likely the fish getting stung by the nem and surviving. As for size they actually can reach up to 5-6" across.
I think your YWG will be just fine. As from your pic the nem is further up on the rocks.