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Terelabrus rubrovittatus, commonly known as the Redstripe fairy wrasse or Red-striped possum wrasse, is a species of marine fish belonging to the family Labridae. Here’s an overview of Terelabrus rubrovittatus:

1. Appearance:
   • Coloration: This wrasse species is characterized by a vivid red stripe that runs vertically along its body, from the eye to the caudal fin. The body itself is typically yellow to greenish-yellow with a pinkish hue.
   • Size: Adults generally reach a length of about 3.5 inches (9 cm).
   • Sexual Dimorphism: Like many wrasses, Terelabrus rubrovittatus displays sexual dimorphism, where males are often more brightly colored and larger than females.
2. Habitat:
   • Redstripe fairy wrasses are found in tropical marine waters of the western Pacific Ocean, specifically around coral reefs and rocky areas. They prefer areas with plenty of hiding places and crevices.
3. Behavior:
   • They are typically found in small groups or harems consisting of a dominant male and several females.
   • Redstripe fairy wrasses feed primarily on small invertebrates, zooplankton, and occasionally small fish.
4. Distribution:
   • Their range includes the western Pacific Ocean, specifically around Indonesia, Papua New Guinea, and northern Australia.