Thanks for the further info, I read that they where a deeper water species and was wondering if chillers where needed or not... good to know, more research to do. we where looking for something to go in the 500-600 gallon range. again it will be quite some time before we even started looking for a distributor to obtain anything.. but in my experiance with fw species you can never have enough info before getting into something new. I have kept SW before, and cared for some Bamboos and Eps when working at LFS's successfully. So far i've been successful with my FW rays, and other oddball species, so i'm not afraid of takeing a step-up on the SW side. But I never really got to in-depth with them, and my husband is obsessed with them. So I promised him his SW set-up when we get a house next spring. The stickies where a great intro. any other suggested reading by anyone about keeping sharks in captivity?