Kokako The kokako is also called the organ-bird because of its haunting, organ-like song which consists of loud, clear and melodious notes. Breeding pairs sing their own distinctive duets for half an hour at dawn, with other birds joining in the choir.
Learn more about the Kokako.
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Scientific Name: Scarus guacamaia
Other Names and/or Listed subspecies: Blue Rainbow
Area(s) Where Listed As Endangered: Central America, North America (including United States), Oceanic, South America
The rainbow parrotfish is a large fish found in the western Atlantic ocean, from Florida, Bermuda and the Bahamas to Argentina. Males grow up to 3.94 feet long. As their name suggests, rainbow parrotfish are attractively colored with deep green bodies, orange fins, and streaks of green extending outward toward the back and tail. Males are more brightly colored than females but only when fully grown. Because of their unusual mouthparts, they are called parrotfish. The teeth are fused, forming a tough parrot-like beak. The beak is used to scrape algae and other organic matter from the surface of coral.
Rainbow parrotfish can be found on coral reefs as deep as 25 meters, and at night they hide in crevices. They are very social and have been observed in schools of around 40 individuals. The schools graze over the reef much like a herd of cattle over a grassy field. Large amount of calcareous materials are consumed by the schools, and in just one year, one parrotfish can convert a ton of coral into sand. One adult male (called the "supermale") often leads these schools. Parrotfish are able to change sex. That is females if needed may become males in order to reproduce. The supermales are typically sex-reversed females and are strongly territorial, habitually driving other males from their areas. Juveniles have been observed in mangroves adjacent to the reef. These mangroves act as important nursery areas and also provide food-rich, predator free safe-havens for the growing young.
This creature is considered vulnerable due to loss of its mangrove nursery habitat. Since the young parrotfish depend on the nurseries, removal of the mangroves has resulted in decline. Other threats include pollution, over-fishing, and coastal development. To preserve the species, a number of reef have been established as reserves (where fishing and other human pressures are prevented).
Rainbow Parrotfish Facts Last Updated: February 10, 2010
To Cite This Page: Glenn, C. R. 2006. "Earth's Endangered Creatures - Rainbow Parrotfish Facts" (Online). Accessed 6/19/2013 at http://earthsendangered.com/profile.asp?sp=12922&ID=5.