Anyone know what this is???

[SirReefalot]

I have had this colony in my tank for about 6 months. I moved it the other day and seen This weird looking polyp. Can anyone identify it? Is it bad is it good? It looks cool. :bagfish:

 

[KathyC]

Unfortunately, that is a majano and you need to kill it asap. They spread quickly

 

[SirReefalot]

Awww shucks!! Looks cool tho. Will get rid of him ASAP thank you for the fast response ms Kathy!