What is this?

[matty0206]

I got this algae on a frag plug, apparently I missed it when I added it to the tank. It seems very invasive and my starry blenny and tang will eat it, just not very fast. It also seems to die when my BTA lays over it and it is very brittle.



Thanks for any help.

 

[altolamprologus]

Looks like Caulerpa mexicana or one of the related species. It's highly invasive so pull out every little fragment you can see and hope the fish take care of what you can't see.

 

[frag!]

Caulerpa. Good inside a refugium but not main display. Very invasive. Its illegal in some coastal states.

 

[matty0206]

Thank you for the responses. I will begin ripping it out as much as I can.