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Parrotfish have a set of pharyngeal teeth which are used to grind up corals. This adaptation helps them reduce interspecies competition for food resources within the reef community. A second adaptation that they exhibit is their hermaphroditic life style. This lets them change sex in response to fluctuations in population density. The third amazing characteristic of parrotfish is that at night they surround themselves in a mucous cocoon to protect them when they sleep.

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15y ago

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