Found a white nudibranch in my tank last night

[FelipeBastos]

It looked like this one

Is it a bad guy? I went to get a pair of tweezers to remove it and it went too deep into the rockwork for me to get ahold of it.

 

[LeslieH]

The one in the image appears to be Glossodoris sedna or something similar. Dorid nudibranchs eat sponges so if you're worried about corals don't be. If you're raising sponges on the other hand it's time to use those tweezers!

 

[FelipeBastos]

I am not raising any sponges, but I have a nice orange one growing from a piece of LR onto another and I was sort of hoping it would continue growing. it has grown a lot since I got it, so it must be "sponging" something.

I haven't see any damage done yet, but will keep an eye out for the nudibranch.

Thanks for the tip.