Nepthia !!!

[GeoSquid]

I think this is a Nepthia coral. It's been in my tank for only 3 days and it's already reaching out and attaching to the rock next to it. Should I be worried !

 

[Mr. Mojo Rising]

If you mean the purple one in the back, that is a cespitularia. That arm is the 'grabber arm', it grows them and they swing around until they connect to something, and they stick and grow from that new spot.

Its one of my favorite soft corals, they come in so many beautiful colors, but they spread incredibly fast. I don't keep them anymore for that reason. The best thing you can do it cut those grabber arms off with scissors when you see them.

 

[GeoSquid]

I thought it was xenia but the guy who sold it said Nepthia. I thought it was cool looking. It looks easy enough to scrape off if it gets crazy. I was just surprised at how fast it started to grow.

 

[HudsonReefer2.0]

Agree on the cespitularia. Careful, beautiful but can be invasive.