Creature Feature

[Rowdies]

Can anyone identify this creature in my tank? Is it good or is it evil?

[Jan]

That is a nudibranch. Usually evil.

[flooddc]

looks like aeolid nudi (bad for zoas)

[Rowdies]

Thank you for identifying. I was looking online and began to suspect it to be one and I removed it from the tank.

[Coral Hind]

I would check your corals and make sure you don't have any other hitchhikers.

[L8 2 RISE]

If you have one in the tank you almost definitely have more. At the very least you have eggs.