Good or bad slug?

Sam25

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I caught this laying babies in my sump. Is it some sort of good slug or something bad like a acropora eating nudibranch?
FF7DC18E-CE1A-4107-B4E2-61EA97865336.jpeg
 
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vetteguy53081

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Caulerpa Slug and eats macroalgae and caulerpa seaweed but I still dont trust these
 

KrisReef

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That looks like a nudibranch, but I'd yield to Vetteguy's opinion as that critter is not hitting any memory neurons in my head at the moment.
 

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