One of New Zealand's most highly regarded eating fish. This is a fish with a blue head and a silver body. Its deep blue head and bright silver body make it easy to recognise. It lives for decades on deep rocky reefs and seamounts. The Māori name Matiri refers to its large, stone-like eyes. These help it hunt in the dark waters of the continental slope. A fish that wears its name on its head. The appearance is distinctive. The adaptation is functional. The body is robust and muscular. It has a large head and a terminal mouth. Colour is a deep blue on the head and back. It fades to bright silver on the belly. The eyes are large and dark. They are adapted to low light. The fins are dusky. The scales are small and rough. The morphology supports the lifestyle. Strength is required for the depth. Camouflage aids survival. It is a deep-water predator. It feeds on salps, squid, crustaceans and small fish. It uses its large eyes to locate prey in the dim light of the continental slope. Feeding happens throughout the water column. From the surface to the seafloor. The range is vertical. The opportunity is constant. The hunger is regular. The method is visual. The environment is dark. Success depends on sensitivity. Growth is slow. It takes many years to reach maturity. It can live for four decades. This is a long life for a fish of its size. The slow pace of life makes it vulnerable to overfishing. A population that is depleted can take decades to recover. There is no quick bounce back. The biology dictates the timeline. Patience is required from managers. Extraction must be measured. Recovery is not guaranteed. Bluenose is highly valued for its firm, white flesh. It is caught by commercial longline and trawl fisheries. This occurs mainly off the west coast of the South Island. And around the Chatham Rise. The fishery is carefully managed under the quota system. Regulation aims for sustainability. Compliance is monitored. The resource is protected. The value is high. The risk is present. To see one is rare. The deep sea is dark. The bluenose hovers over a seamount. Blue head and silver body. Stone-like eyes watching. The longline sets. The bluenose is caught. It does not know it is highly regarded. It does not know it is vulnerable. It hangs in the water. It waits for the hook. Or it does not. The outcome is random. The fate is sealed. It just wants to eat a squid. They have been here for thousands of years. They will be here as long as the quotas are respected. And the habitat is protected. The balance is delicate. The management is active. The future is uncertain. The fish carries on. It swims in the deep. Unseen. Unvalued by the casual observer. But prized by those who know. The bluenose remains. A testament to the intact slope. A relic of the wild deep. It waits for dinner.