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Fig. 1. Diverse pigment patterns of Danio fishes and their relatives. D. rerio, D. nigrofasciatus and D. kyathit all exhibit well-defined horizontal stripes of melanophores, although D. kyathit adults develop breaks and irregularities in the stripes both anteriorly (shown) and posteriorly. D. kerri exhibits a few broad and relatively diffuse melanophore stripes. D. albolineatus adults lack horizontal stripes and melanophores are evenly distributed, although larvae exhibit a transient pattern of stripes posteriorly. D. choprae have vertical bars of melanophores as adults and transient horizontal stripes at earlier stages. Devario (formerly Danio) shanensis adults have vertical bars of melanophores anteriorly, with horizontal stripes posteriorly. Tanichthys albonubes exhibit a narrow horizontal melanophore stripe with a broader pattern of evenly dispersed melanophores. Yellow coloration in fish derives from neural crest-derived xanthophores, whereas red pigment in some species derives from neural crest-derived erythrophores. Adult fish are 25-30 mm standard length.





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