![New Zealand Fishing Boats](https://www.seaaroundus.org/wp-content/uploads/2023/09/New_Zealand_Fishing_Boat-3388.jpg)
New Zealand fishing boats. Photo by QFSE Media, Wikimedia Commons.
Pelagic-oceanic fish commonly caught in warmer waters, such as skipjack tuna and blue mackerel, have been increasing in New Zealand’s waters since the 1950s, while cold-water species such as southern bluefin tuna display strong reductions in overall catch from the 1970s onwards, new research has found.