Siganus hexacanthus, better known as the Masked Spinefoot Rabbitfish, has a beautiful yellow body with a black mark or mask with several dots on top from tip or the dorsal fin to the bottom of the mouth. It also has blue dotted lines from the anal fins toward the front of the body also having blue tips on both the dorsal and anal fin. Masked Bluelined Rabbitfish, Siganus puellus or Masked Spinefoot maintain their peaceful demeanor with help from their venomous dorsal and anal fin spines. Masked Blueline Spinefoot are colorful and have well developed, venomous, dorsal and anal fin spines.