30/04/2026
Beautiful....but disheartening to see people trying to catch the ones in our river with hooks....
Autumn is when something incredible happens with the tuna/eels in our regional parks and beyond.
After spending at least 30 years (and sometimes 100 years) in the freshwater streams of Aotearoa New Zealand, adult tuna may begin the long journey to their breeding grounds across the Pacific Ocean! Changes happen to their body shape and colour to help them thrive in the ocean, including streamlined faces, and larger eyes 👀
The adult tuna will go to incredible lengths to reach the ocean. They are amazing swimmers and can even cross areas of land and beaches! No one yet knows exactly where these tuna breed and spawn (lay their eggs), though we know it could be as far away as Tonga or New Caledonia.
After breeding, the adult tuna die and their larvae are carried on ocean currents all the way back to reach rivers and streams around Aotearoa and begin their life cycle again. Incredible!
Unfortunately, longfin eels are at risk and in decline. Habitat loss and barriers to migration like dams and weirs can make it difficult for them to complete their lifecycle. Greater Wellington works hard to protect and improve passage for all our native freshwater fish.
Go visit your favourite tuna this Autumn to wish them well on their journey! One place to see and interact with longfin eels is Battle Hill Farm Forest Park in Pāuatahanui.
Where do you go to see tuna? 👇