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John3142
I found this today in the tank, and I understand that it is a nudibranch. Is it beneficial or, more correctly, is it safe? I'm obviously calm about it for myself, but can it harm anything in the aquarium? I found it in the compartment with the return pump, so it has no way to the top, except in pieces. I am looking forward to your suggestions regarding its future. Its size is about 6 cm. Thank you.