Objective To better understand the mechanism of transparency in adult crucian carp,explore its application and provide more evidence to support it as a novel aquatic animal model.Methods The transparent crucian carp was bred,and the phenotype of offsprings was examined to learn the inheritance of the transparent character.A stereomicroscope was used to examine the types and patterns of chromatophores in transparent and common crucian carps.The fish infected with microsporidia were closely monitored.Tissue s...