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Cleaner fish
Cleaner fish are fish that provide a service to other fish species by removing dead skin and ectoparasites.〔Curry, O. "(Morality as natural history )." ''University of London Ph.D. Thesis.'' 2005. Accessed 2009-06-08.〕 This cleaning symbiosis is an example of mutualism, an ecological interaction that benefits both parties involved. However, the cleaner fish may sometimes cheat and consume mucus or tissue, thus creating a form of parasitism.〔Gingins, S (2013) ("Power and temptation cause shifts between exploitation and cooperation in a cleaner wrasse mutualism" ), ''Proceedings of the Royal Society B'', 280 (1761): 20130553. 〕 A wide variety of fishes including wrasse, cichlids, catfish, pipefish, and gobies display cleaning behaviors. Similar behavior is found in other groups of animals, such as cleaner shrimps.
Cleaner fish advertise their services with conspicuous coloration, often displaying a brilliant blue stripe that spans the length of the body. This adaptation has evolved independently in different species of cleaner fish, making it an example of convergent evolution.〔Cheney, K.L., ("Blue and Yellow Signal Cleaning Behavior in Coral Reef Fishes" ), "Current Biology", 2009〕 Other species of fish, called mimics, imitate the behavior and phenotype of cleaner fish to gain access to client fish tissue. This is another example of convergent evolution.〔Cheney, K.L. (2005) ("Frequency-dependent success of aggressive mimics in a cleaning symbiosis" ), ''Proceedings of the Royal Society B'', 272 (1581): 2635-2639.〕
==Diversity of cleaner fish==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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