A comparative cytogenetic analysis, using both conventional staining techniques and fluorescence in situ hybridization, of six Indo‐Pacific moray eels from three different genera ( Gymnothorax fimbriatus , Gymnothorax flavimarginatus , Gymnothorax javanicus , Gymnothorax undulatus , Echidna nebulosa and Gymnomuraena zebra ), was carried out to investigate the chromosomal differentiation in the family Muraenidae. Four species d...