Nudibranch ID - Safe or not?

[Liquid Hobby]

Just found this on a distressed turbo snail. It's currently quarantined...

Looking through a rocker glass, essentially a top down shot. 'Head'/eyes to the left:

Here's what its belly looks like - head/eyes to the right:

Friend or foe?

 

[ingtar_shinowa]

Foe, a polyclad they eat primarily mollusks and can eat coral as well. Very efficient killers.

 

[Liquid Hobby]

Foe, a polyclad they eat primarily mollusks and can eat coral as well. Very efficient killers.

So, if there is one, are there others?

 

[ingtar_shinowa]

I've never found one, but this guy looks like a popular species in the hobby. There are usually only one, though you may find another, They are not like a planaria or AEFW.