The black body moray (Gymnothorax melanosomatus) is an eel in the family Muraenidae (moray eels). It was described by Loh Kar-Hoe, Shao Kwang-Tsao, and Chen Hong-Ming in 2011. It is a tropical, marine eel which is known from southeastern Taiwan, in the Pacific Ocean. Males are known to reach a maximum total length of 49.6 cm, while females are known to reach a maximum of 50.4 cm.