Ctenochaetus tominiensis  Ctenochaetus tominiensis, known commonly as the Tomini surgeonfish among other vernacular names, is a species of marine fish in the family Acanthuridae. The Tomini surgeonfish is widespread throughout the tropical waters of the central Indo-Pacific region from Indonesia to the Tonga Islands. The Tomini surgeonfish is a small size fish and can reach a maximum size of 16 cm length. It occasionally makes its way into the aquarium trade.