Ember parrotfish

The ember parrotfish (Scarus rubroviolaceus) is a species of marine ray-finned fish, a parrotfish, in the family Scaridae. It is native to the Indian and Pacific Oceans. It is also known as the bicolor parrotfish and the redlip parrotfish.

Distribution
The ember parrotfish is widespread and abundant. It has been found in the Indian and Pacific Oceans, with its range including Japan, eastern Africa, and the Hawaiian islands.

Description
The species is sexually dimorphic, with the males possessing a bright, greenish-blue color while the females are a duller brown.

Habitat and behavior
Diet includes aquatic plants and benthic algae, which scrape off rocks using their beak. Ember Parrotfish shows sequential hermaphroditism meaning it changes its sex at some point in its life. Juvenile Ember Parrotfish has undifferentiated sex. As it grows, at a body length of about 32 cm at about 2.6 years old, it matures into a female who is reddish brown. It remains as a female for quite some time and when it grows further, at a body length of 37cm it is about 13 years old, it changes its sex into a male. However, some remain female throughout their lives. The Ember Parrotfish also lives up to 20 years.

Importance to humans
The ember parrotfish is commercially fished, and can be kept in saltwater aquariums.

Etymology
The genus name, Scarus, comes from the Greek word "skaros", meaning "parrotfish".