Fish coloration, a subset of animal coloration, is extremely diverse. Fish across all taxa vary greatly in their coloration through special mechanisms, mainly pigment cells called chromatophores.[1] Fish can have any colors of the visual spectrum on their skin, evolutionarily derived for many reasons. There are three factors to coloration, brightness (intensity of light), hue (mixtures of wavelengths), and saturation (the purity of wavelengths).[2] Fish coloration has three proposed functions: thermoregulation, intraspecific communication, and interspecific communication.[3] Fishes' diverse coloration is possibly derivative of the fact that "fish most likely see colors very differently than humans".[4]
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