Nudibranch, naughty or nice?

minireef

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Hope all had a good Thanksgiving?! Just put a mushroom rock in the tank and this fellow comes slithering out. It’s white and just laid eggs. Good bad or down right ugly?

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Can you get a clear, straight-on, top-down shot of its back showing the full nudibranch? A clear, straight-on, side shot of the full nudibranch would help too (especially if you can get some clear pics of the structures on its back).
 
Can you get a clear, straight-on, top-down shot of its back showing the full nudibranch? A clear, straight-on, side shot of the full nudibranch would help too (especially if you can get some clear pics of the structures on its back).
 

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Nice. They are soft-bodied marine gastropod mollusks that shed their shells after their larval stage. I keep them in my sump. Hermit crabs and most fish will eat them.
 
Anyone? Please?
Sorry, I honestly forgot about this thread - all I can tell from the pics is that it's likely either a Tritonioid or a Dendronotoid nudibranch; that means that it most likely either feeds on soft corals/gorgonians, or on hydroids - regardless, it also most likely only feeds on like one to four species, so it'll eventually starve.

What soft corals/gorgonians do you have in your tank? You'll want to inspect them for more nudibranchs and for nudibranch eggs, and you'll want to remove any you find.

Edit: Remembering that it came in on a mushroom coral and laid eggs - I seriously doubt it eats the mushroom coral, so it may not have any of its preferred food items in your tank, but I'd still make sure to remove the nudibranch and eggs.
 

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