Can someone can ID this...Please

[Cabanone]

Hello
i have a jbj 20 gallon nano cube
i have this little snug like animals in my tank, i dont know where they came from. I dont think they are bad
ive had my tank going for over a year and a half. they hang out only by the polyps.
thanks for any info.

 

[Usatennisfan]

Looks like nudibranch, maybe a zoa eating one. I'd take it out just to be safe.

 

[Tahoe61]

Yes probably a Zoanthid eating Nudibranch. Need to remove adults manually and check the frags for eggs. Just google Zoanthid Eating Nudibranch Egg Images.

 

[Cabanone]

Thank you guys, I will take it out asap,
When I went to reefa palooza, one of the sellers had something similar
Selling for 10 dollars I i thought it was good. But guess not lol
Thanks agai