Are these invasive?

[Mrcote1]

I got the frag a week ago and I just want to make sure these arent invasive? The polyps are larger than my zoa frag but the stalk are smooth so im thinking they are zoas and not palys?

The rock they are on can not be taken out of the tank ever (its massive) so id have to cut them in the tank to keep them at bay so if these are a no go for that I'll have to pull the frag out

 

[stE25wy14]

those r zoas, they are not invasive at all...
the top are just fully extended, the lower ones are just shaded

 

[Tahoe61]

Are they SunnyDs? They sure look like it. These are SunnyDs and they grow wickedly fast.

 

[Mrcote1]

Are they SunnyDs? They sure look like it. These are SunnyDs and they grow wickedly fast.

I dont think so, the outside is reddish orange, then the inside is like greenish, and the center is blue but I can tell the ones I have grow fast as ive only had it for a couple weeks and there is already new polyps starting

 

[Tahoe61]

I dont think so, the outside is reddish orange, then the inside is like greenish, and the center is blue but I can tell the ones I have grow fast as ive only had it for a couple weeks and there is already new polyps starting

The bigger types do grow faster ime. Growing is good. Typically I see new polyps forming a week or so after introduction. I have a Rasta frag that I have had a little over a month, it has about 7 new polyps.