Nudibranch ID

[uberfugu]

Does anyone have an ID on this guy? He came in as a hitchhiker on some Indo L/R and has been in my LPS tank for about 6 months. TIA

 

[LeslieH]

It's Chromodoris rubrocornuta, a chromodorid nudibranch. Members of this family are sponge eaters and usually eat only one or a few related species of sponge.

 

[uberfugu]

thx! I usually lose hitchhikers over the long term but this guy has persited for a while. I do have a lot of cryptic sponge growth.

 

[romunov]

The problem is, they're very very picky about their diet.