IN THE DARK COLD of Lake Rotoiti, the serpentine longfin eel prepares for her final journey.
For 80 years, she’s prowled the lake’s depths, stalking fish, koura and ducklings. At well over a metre in length, she has long ago grown into her role at the top of the food chain. Her eyes, once small and beady, have become large, orb-like, with an ocean blue ring surrounding the pupil, and her head has elongated to a point, hydrodynamic and sleek – she is ready to breed.
As the rains of autumn begin to fall, swelling lakes and rivers, the longfin sets off on her final swim. But to where, no one knows.
The longfin eel is the most revered of all New Zealand freshwater fish species, and with good reason.…