I'm not talking about blasing anything - just stating what I've personally seen over the years along with keeping them of my own. Personally speaking I think they are pests almost has bad as Xenia (both of which I keep mind you). I started with a single RBTA and now have eleven over the course 9 years I'd say. 1st started in a 29 gallon biocube. It split, then two became too much so picked up another cube and moved it. It split again back to two in one tank, single in other. Upgrade and combined into a 40 breeder and over the next couple of years those turned into six or seven. Upgraded to my 210 gallon and now I'm at 11. I've lost one or two along the way due to some unknown reason but seem to be holding steady at 11. Not a single one look the same. All are RBTA for sure but depending on their location in the tank, of their choice, lighting, shade, long tenticles or bubbles due to flow some have green swirls, others cream, and some none. Some are light in red, some dark.
That is why there is a disclaimer on corals with regards to color at source of purchase to your tank.
Edit for clarity: I'm not saying don't buy it. Just consider shopping around because a RBTA do vary in color and are pretty cheap all things considered. You may save a couple bucks is all I'm saying.
