Fish Facts: Royal Dottyback – Pictichromis Paccagnella November 8, 2022 by Vanessa Alimo Picture of a Royal Dottyback. Colorul little fish that is half purple and half yellow. Related Posts:Fish Facts: Man-of-War Fish - Nomeus gronoviiFish Facts: Lemon Fish or CobiaFish Facts: Blackfin TunaFish Facts: Wild GoldfishFish Facts: Mayan Cichlid - Cichlasoma UrophthalmusFish Facts: Cutthroat Trout - Oncorhynchus Clarkii