Nudi Identification

[MelNGuy]

Came across this at the LFS and was told that it was a non coral eating nudi. I've searched the web for yellow and black nudi's but have not found one like it. Any ideas?

 

[LeslieH]

Is it overall yellow & black with a "pitted" look on the back? Then it's Chromodoris joshi. All chromodorids are thought to be sponge eaters. C. joshi has been photographed several times on one particular red sponge as you can see here: http://slugsite.us/bow/nudwk114.htm
If that is its food sponge & you don't have it the nudi will eventually starve.

 

[MelNGuy]

Thanks a bunch! That does look lilke it.