Does anyone know if this slug looking creature is good or bad?

[Dj Medic]

I was moving some zoa frags and saw this on the underside of one of the plugs. It doesn't look like one of those zoa eating nudibranch that I've seen pictures of. Just wondering if I should exile it forever or leave it be.

 

[KrisReef]

The “horns “ on the head and soft invertebrate body is characteristic of a nudibranch, which appears to have been feeding on whatever is visible inside its gut.

I don’t know what you have (friend or foe) but these things tend to have specific food items that they eat.

Some eat coral, so I would look around your tank to see if it’s been eating any livestock?

 

[Dj Medic]

The “horns “ on the head and soft invertebrate body is characteristic of a nudibranch, which appears to have been feeding on whatever is visible inside its gut.

I don’t know what you have (friend or foe) but these things tend to have specific food items that they eat.

Some eat coral, so I would look around your tank to see if it’s been eating any livestock?

Nothing looks any different so I have no idea what it's been eating. I'm hoping it's one of those algae eating ones.