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cichlid |
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cichlidAny freshwater fish of the family Cichlidae. Cichlids are somewhat perchlike, but have a single nostril on each side instead of two. They are mostly predatory, and have deep, colourful bodies, flattened from side to side so that some are almost disc-shaped. Many are territorial in the breeding season and may show care of the young. There are more than 1,000 species found in South and Central America, Africa, and India. The discus fish Symphysodon produces a skin secretion on which the young feed. Other cichlids, such as those of the genus Tilapia, brood their young in the mouth. More than 50% of the world's cichlids are found in Africa's great lakes, and within each of these lakes 99% of the species are found nowhere else. Many species remain unclassified and Lake Malawi alone may contain up to 1,000 species. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| In recent years, other biologists have seen traces of this process in such creatures as cichlid fish and Rhagoletis flies (SN: 7/21/01, p. The book contains a great deal of research into animal and primate behavior, some of which illuminates Goldstein's larger arguments, but it is hard to see how an analysis of the behavior of wrasse and cichlid fish enhances our understanding of gender and warfare in human societies. I learned that Lake Victoria, once home to 300 species of cichlid fish, is now dying due to pollution and the introduction of the Nile perch. |
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