Zoology Publications from Victoria University of Wellington—Nos. 54 to 57
Purported differences between H. dakini described from Australia and the world-wide H. perlo stem from sexual dimorphism, females usually having the anal fin origin beneath the middle of the dorsal fin base, whereas in males it is below the end of the dorsal base. The nature of the dimorphism is discussed and measurements are given of Australian, New Zealand and Cuban specimens. A range of 90–93 precaudal centra and 52–59 caudal centra in six Australian and New Zealand specimens conforms with published counts from Atlantic specimens of H. perlo. Brief notes are included on the known distribution and the presumed habitat and mode of life of H. perlo.