Hello, ID please

[Firepony]

I got this at the store the other day, they tried telling me it was an acan lolol. Anyway, ID please :) sorry for my crappy phone pics. I'm thinking of mounting some to my back glass...ideas on this? I want something that stays short on my glass, not like GSP that can reach 2ish inches long. I thought of zoas...???
(Cross posted)

 

[blaxsun]

Possibly a flowerpot or polyp? Can't tell from the image whether it has a skeleton or if that's the frag plug, and it's partially closed up. Definitely not an acan (sorry if you were hoping for an acan).