Help me recognize that coral.

[Pawel]

That green coral appeared in my brothers tank out of nowhere. There are about ten of them now and they move around the tank. They multiply quickly and even go into other corals. Is this is something to be worried about?
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[100LL]

That green coral appeared in my brothers tank out of nowhere. There are about ten of them now and they move around the tank. They multiply quickly and even go into other corals. Is this is something to be worried about?
View attachment 24434
View attachment 24435

Majano Anemone

http://www.melevsreef.com/pics/bta/not/majano.html


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[Pawel]

Got it. Thanks a lot.

 

[madjoe]

Oh crap those r bad and a pia to get rid of. Seen them take over a whole tank in a yr

 

[jrwoltman]

Find someone with a ZAPPER, pronto, and annihilate them or your bro will be breaking down his tank.

 

[Pawel]

He's already removing them. When they start multiply rapidly I knew something is wrong.