Good or Bad Nudi?

Steve2020

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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?

20210729_081913.jpg
 

Goaway

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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.
 

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