deepest cold-water predator on the menu

Size
Length: 100–150 cm, Weight: 10–30 kg
Lifespan
30–50 years
Diet
Feeds on fish, squid and crustaceans. Lives in cold deep water of Southern Ocean from 500 to 2,500 metres depth. Deep sea Antarctic specialist found around underwater mountains.
Habitat
Cold deep water of Southern Ocean from 500 metres down to 2,500 metres. Often around underwater mountains and continental shelf of sub-Antarctic islands in freezing conditions.
Range
Southern Ocean. In New Zealand waters found around sub-Antarctic Auckland and Campbell Islands. Most common on underwater mountains and continental shelf from 500 to 2,500 metres depth.
Endemism
Native
Main Threats
Commercial overfishing and illegal unreported and unregulated fishing are primary threats. Slow growth and late maturation increase vulnerability. Bycatch of seabirds in longline fisheries also impacts ecosystem.
Population
Not Threatened in New Zealand waters but heavily managed due to historic overfishing. Found around sub-Antarctic islands including Auckland and Campbell Islands. Fishery strictly controlled with quotas.
Conservation Status
Not Threatened
The deep sea heavyweight with a marketing problem. Most people know it by its other name. Chilean sea bass. A fish so delicious that marketers had to rename it to make it sell. The rebranding was successful. The original name was not. Patagonian toothfish sounds aggressive. Chilean sea bass sounds appetising. The biology is the same. The perception is different. The market responds to the label. Not the Latin name. Large robust body with a broad flattened head. A mouth full of sharp canine teeth defines the face. Dark greyish-brown covers the back. It fades to a pale white belly. The flesh is white, oily and incredibly rich. A fish that looks like a thug. It eats like a king. The contrast is striking. The appearance suggests danger. The taste suggests luxury. The reality contains both. Ambush predators of the deep cold sea. Patagonian toothfish live in dark freezing water of the Southern Ocean. They feed on fish, squid and crustaceans. The diet is varied. The hunting strategy is patient. They are slow-growing and long-lived. Some individuals reach over 50 years of age. They do not reach sexual maturity until at least 10 years old. This makes them vulnerable to overfishing. A fish that takes a decade to become an adult. The investment is long. The return is delayed. The risk is high. It became famous in the 1990s. Illegal fishing boats nearly wiped out the population around sub-Antarctic islands. The fishery was shut down. Pirates were chased away. Now it is one of the most carefully managed fisheries in the world. A success story. Rare, but real. The recovery was not accidental. It was enforced. The international cooperation was strict. The monitoring was intense. The result is visible. The stock has rebounded. But the memory remains. To eat Patagonian toothfish is to eat a success story. A fish that was almost gone. Brought back by strict management. A rich white buttery fillet on a plate. The fish of the deep south. The one that lives in freezing water under the ice. In the shadow of the Auckland Islands. A deep dark delicious secret of the Southern Ocean. The provenance is specific. The origin is remote. The journey is long. The fillet is white. The flavour is rich. The story is complicated. The fish does not care about any of it. It just swims in the freezing dark. Growing slowly. Waiting to be caught or to die of old age. Whichever comes first. The indifference is total. The value is external. The survival is precarious. It carries on.