Grey Head Wrasse - Halichoeres leucurusGrey Head Wrasse (Halichoeres leucurus) The Grey Head Wrasse, Halichoeres leucurus, is an active and attractive marine wrasse with variable green, grey, orange and blue patterning that changes with age and sex. Also known as the Greyhead Wrasse, Chain lined Wrasse or Silty Wrasse, this Western Pacific species is a lively reef fish that spends its day foraging across sand, rubble and rockwork for tiny invertebrates. It is generally reef safe with