Gymnothorax sagmacephalus
Encyclopedia
Gymnothorax sagmacephalus is a moray eel
Moray eel
Moray eels are cosmopolitan eels of the family Muraenidae. The approximately 200 species in 15 genera are almost exclusively marine, but several species are regularly seen in brackish water and a few, for example the freshwater moray can sometimes be found in freshwater...

 found in the northwest Pacific ocean, around Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

. It was first named by Böhlke in 1997, and can reach a maximum length of approximately 53 centimetres.
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