Lobo or Acan?

[kyungman]

Hi all, I recently bought these corals from my LFS and they were all sold to me as “Acan” (Micromussa), but the more I look at them, the more I feel they may not all be the same species.

Especially the red one on the left — it sometimes extends longer semi-transparent tentacle-like feeders/sweepers, which makes me wonder if it could actually be a Lobo or something else.

Based on the photo, would you be able to help identify them?

Do they all look like Micromussa/Acan, or are they different species? If they are different, should I increase spacing and rearrange them to avoid coral aggression?

Thanks in advance!

 

[RedReefer]

All are acans.

 

[DSC reef]

+1 all of the corals are acans

 

[thamnasteroid]

all of them are Acans (Micromussa), Lobos are usually phaceloid and have larger polyps while Micromussas are cerioid and have coenosarcs/mantles that form a lip over the theca