Good or Bad Nudi?

[Steve2020]

Found this little guy on the glass this morning. I had a couple a few months ago that were zoa eating nudi's and got rid of them. They were cream colored. This one has some yellow on him. I know they can change color depending on what they eat but I have no yellow Zoas in the tank. Should I get rid of him to be safe?

 

[Goaway]

Toss it, Most likely gained its colors from eating some zoa's. It's a zoa eating nudibranch.

Edit: the zoa doesn't need to be yellow for them to turn yellow.

 

[Steve2020]

Will do. Thanks.