yes he is! I am frantically searching the web for ID's nowWow! That is so cool! No idea if it is bad or not.
the things we pull out of the oceans...
Yeah put it in the sump, or see if someone local is willing to set up a specialty tank for it.
what site?? they are really beautiful . I will put him back in the RSM 130 and let him live on his rockcolorful nudibranch - Bing ImagesA quote from this website ....
"There are over 3,000 known species of nudibranchs, and scientist estimate that only half have been discovered so far. The creatures soft-body and short life span of 1 year make it possible for many of them to live undetected and vanish from the earth without a trace. "
* it has your Nudi but no name....
keep in mind the only rock in this tank is from Florida.im sticking with Chromodoris quadricolor aka pyjama nudibranch native to the red sea