I've bought 2 'peppermint shrimp' from different shops in the UK this week, only to realise they are both the Californica type and are a cold water species. I was wondering if anyone has had any experience with them. I haven't witnessed them eat any aiptasia yet but neither have they done anything harmful. One was in hiding until I bought another today and now they are both very active, so I guess I'll see what happens tonight.