Carpet Merten,Gigantea, Hadonni or what?

[5Starreef]

Recently I bought this carpet, Can you help me to identify?
It is about 3" fully open
I think is a small S. mertensii, what you think?
<a href="http://www.flickr.com/photos/42990443@N06/5621932031/" title="Carpet Merten 2 by fivestarreef, on Flickr"><img src="http://farm6.static.flickr.com/5305/5621932031_a4ba08ee1b_z.jpg" width="640" height="481" alt="Carpet Merten 2"></a><a href="http://www.flickr.com/photos/42990443@N06/5622519000/" title="Carpet Merten 1 by fivestarreef, on Flickr"><img src="http://farm6.static.flickr.com/5064/5622519000_e465020a3d_z.jpg" width="640" height="480" alt="Carpet Merten 1"></a><a href="http://www.flickr.com/photos/42990443@N06/5621932453/" title="Carpet Merten 4 by fivestarreef, on Flickr"><img src="http://farm6.static.flickr.com/5229/5621932453_f8c641f435_z.jpg" width="640" height="481" alt="Carpet Merten 4"></a><a href="http://www.flickr.com/photos/42990443@N06/5622519906/" title="Carpet Merten 5 by fivestarreef, on Flickr"><img src="http://farm6.static.flickr.com/5024/5622519906_b2889fcb54_z.jpg" width="640" height="481" alt="Carpet Merten 5"></a><a href="http://www.flickr.com/photos/42990443@N06/5621932975/" title="Carpet Merten 6 by fivestarreef, on Flickr"><img src="http://farm6.static.flickr.com/5301/5621932975_dd457ec97e_z.jpg" width="640" height="481" alt="Carpet Merten 6"></a><a href="http://www.flickr.com/photos/42990443@N06/5622521870/" title="Carpet Merten 10 by fivestarreef, on Flickr"><img src="http://farm6.static.flickr.com/5022/5622521870_4f612040da_z.jpg" width="640" height="481" alt="Carpet Merten 10"></a><a href="http://www.flickr.com/photos/42990443@N06/5621934789/" title="Carpet Merten 12 by fivestarreef, on Flickr"><img src="http://farm6.static.flickr.com/5150/5621934789_8fbed946ae_z.jpg" width="640" height="480" alt="Carpet Merten 12"></a>

 

[this is me]

Atlantic carpet anemone. Known to eat fish INCLUDING clowns.

 

[kduen]

Atlantic carpet anemone. Known to eat fish INCLUDING clowns.

+1 on the S. helianthus.

 

[Reefvette]

Atlantic, Mertens have longer tentacles near the mouth noticeably longer.

 

[cubman20]

+2 will eat fish

 

[Conrad25]

Def. Atlantic................

 

[elegance coral]

Evil critter. These shouldn't be collected for the hobby IMHO.