Please Identify

[mrjantzen]

Does anyone know what this is? It is about 3 millimeters long.

 

[DylanCameron]

Some type of nudibranch, unfortunately it looks like the montipora eating variety. Did these come off of a coral?

Montipora Eating Nudibranch Finally Have a Name: Phestilla subodiosus | Reef Builders | The Reef and Saltwater Aquarium Blog

Of all the corals pests that reef aquarists have to deal with, prevent, and remove, Montipora eating nudibranch is one of the most egregious and damaging. The reefing community has been trying to find…

reefbuilders.com

 

[mrjantzen]

Not sure where they came from. Just noticed it on the front glass. I guess I will squash any I find.

Thanks.