Graham's gudgeon  Graham's gudgeon, "Grahamichthys radiata", is a species of goby of the family Thalasseleotrididae, the only member of the genus Grahamichthys. This species is found in rock pools and in the neritic zone, to in depth, where sand or mud is lies around and partially buries rocks, shells, or other objects. It is unusual for a goby, in that it lives in loose schools. The generic name is a compound formed from the surname Graham in honour of David H. Graham who wrote "A Treasury of New Zealand Fishes" which was published in 1953 and therefore is an allusion to this taxon being endemic to New Zealand and the Greek "ichthys" meaning "fish".