Waikanae:

Literally mullet river, but a specific origin is given in song and legend. In the chant of Te Rangitakoru for his daughter Wharaurangi, the original Maori of which is contained in Sir George Grey's “Nga Moteatea,” it is said that Hau looked askance, out of the corner of his eye (“ka ngahae nga pi”). He likened his eyes to the glistening of the mullet, or to the mullet's eyes.