Ok, just so you know that a Chromodoris Magnifica, and are mostly a sponge feeder, do you have any sponges in your tank?
I have had mine for 6 months now, just lucky that I have the type of sponge that it feeds off of, More often they starve in a aquarium, and they can squeeze into very small places, mine has been in my sump over a dozen times
![Mad :mad: :mad:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
, Good luck with that one