Triggerfishes are about 40 species of often brightly colored fish of the family Balistidae. ...

The Indian Triggerfish (Melichthys indicus), also known as the black-finned Triggerfish, has a brown body and black fins with white lines at the base of the dossal and anal fins. It is found across the Indian Ocean. They can grow up to 25 cm. long. The Indian triggerfish usually feeds on hard-shelled mollusks and echinoderms, but some feed on algae and zooplankton.

The Orange-lined Triggerfish has a dark brown to dark green body with orange lines that start behind the head and cover the rest of its body. Their maximum body size is about 30 centimeters. Its body has a stocky appearance, oval shape, and is compressed laterally. The head is large and is about one third of the body length. The mouth is small and terminal and it has strong teeth.