Bleeker described 2 specimens of a beautiful moray eel, Muraena xanthospilos, in 1859. The species has subsequently been reported only 3 times (once as Poecilophis ornata Kaup, a junior synonym) until now. In this study, we redescribe the species based on Bleeker's syntypes, one of the previously recorded specimens, and 3 additional recently collected specimens. A lectotype is designated; the variations of spots, the dentition and the body length formulas of different growing stages are described; and photographs of a fresh specimen are provided for the first time. Echidna xanthospilos differs from other species of Echidna in its shorter tail, smaller number of vertebrae, and distinctive coloration.


