Can all these Acan touch each other?

[The Opinionated Reefer]

Can these Acans all touch each other without stinging?

I am unsure if the one with orange mouths is a super puffy echinata or an micromussa?

I assume the rest are micromussa and can touch?

 

[Zoa_Fanatic]

That purple one I don’t know about but the rest look like micromussa lords to me and should be fine to touch. But I’m not an expert. Someone else may have more info

 

[The Opinionated Reefer]

yes i think the purple one is an echinata.

So if i stick the micromussa onto the rock work quite close to each other will they encrust onto it? And form a mass of them? This is the first time i have had acans.