Also, treading into dangerous waters... are there any colorful Nudi's that can be easily kept in a reef tank or is this a lost cause?

<hmmm... sort of. The key to any Nudibranch is identifying and supplying their food source. Many will keep and breed easily if you can do this. I keep an active colony (several hundred!) of beautiful blue Berghia (Aiptasia eaters). Other folks keep and breed Elysia sp algae eaters... some folks even dabble with the zoanthid eating species. The problem with keeping in reef tanks is that most such systems have excessive powerheads and overflows. If you plan well though, you can keep some beauties> I always feel so bad when I see these really amazing looking, doomed Nudi's at the LFS. There should be a campaign on to stop the collection of specialized feeders such as these. <no formal campaign is needed. Educated aquarists simply vote with their dollars and do not buy them. They die in the dealers tank, and when it happens enough times, the dealer stops ordering them <G>. You might help this along with a polite mention of the reality (supported by a helpful list of web links or ...  more