The geometric moray (Gymnothorax griseus)is a moray eel of the family Muraenidae found throughout the western Indian Ocean at depths to 40 m. Its length is up to 65 cm. It is parasitized by Ichthyoxenus puhi, a species of isopod.
The fish is generally pale purple or greyish in colour, with a brownish head with distinct lines of black dots.
