I believe it is a rainbow. My gf got me this on our first adult only date to reefapalooza orlando 2016. We had gotten another one at same time. Within a month they both split. Then a lil later one of them split again. 3 on 1 rock and 2 on another. I traded 3 of them for a soft coral and an expensive crested gecko from a fellow reefer in my area. They are beautiful. This one was always The prettiest of the bunch. The other one i had left before this is in my qt on the gps rock. He wont move.:mad: any way sorry got long winded. And also sorry for runon sentences. (Not an English-language expert)