Bluenose

Maori name: matiri
Scientific name: Hyperoglyphe antarctica
Availability: Year round
Weight: 5–6kg, up to 20kg
Length: 60–100cm, reaching 130cm

Bluenose

Maori name: matiri
Scientific name: Hyperoglyphe antarctica
Availability: Year round
Weight: 5–6kg, up to 20kg
Length: 60–100cm, reaching 130cm
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Location

They are found in the temperate waters of the Southern Hemisphere. They like rough ground on the outer shelf and upper slope, especially from 100 to 500 metres.

Attributes

Dark metallic blue-black to grey on the back of the body, shading to silver on the sides and belly. Bluenose is distinguished from Hapuku/Groper by a blunt snout and laterally compressed body with large eyes set low in the head. Bluenose have larger mouths and more prominent dorsal fins than (closely related) Warehou.

Family

Bluenose belong to the Centrolophidae family (raftfish, medusafish).

Spawning

They grow quickly for the first two years, the females faster than the males, with adults first spawning at four to five years.

Sustainability

Bluenose have been landed from New Zealand waters since the 1930s, although the bluenose target line fishery only developed in the late 1970s. Bluenose was introduced to the Quota Management System in 1986; the first fully quantitative stock assessment modelling was carried out in 2011 and assumed a single New Zealand wide biological stock. The assessment indicated that the stock abundance dropped below the management target level in the early 2000s, and a series of catch reductions was implemented to rebuild the stock.

Fishing methods

Bluenose are caught year round, by trawl and longlining, mainly around or on offshore reefs or drop-off areas. Many are caught in association with seamounts.

Nutrition

Bluenose is a good source

To quality for a 'good source' claim the food must contain at least 25% of the RDI.
The Recommended Dietary Intake (RDI) is considered to be the average daily dietary intake level that is sufficient to meet the nutrient requirements of nearly all (97–98 per cent) healthy individuals in a particular life stage and gender group.

of Selenium

Selenium is necessary for normal immune system function and for the production of thyroid hormones and it contributes to the maintenance of hair and nails

and Vitamin B12

Vitamin B12 is necessary for normal neurological function and it contributes to blood formation, energy metabolism and to the growth and development in children

; and a source

To quality for a 'source' claim the food must contain at least 10% of the RDI.
The Recommended Dietary Intake (RDI) is considered to be the average daily dietary intake level that is sufficient to meet the nutrient requirements of nearly all (97–98 per cent) healthy individuals in a particular life stage and gender group.

of Iodine

Iodine is necessary for the production of thyroid hormones, for normal neurological function and for normal energy metabolism, and it contributes to the growth and development in children

, Phosphorus

Phosphorus is necessary for normal teeth, bone and cell membrane structure and for energy metabolism

, Potassium

Potassium is necessary for water and electrolyte balance, it contributes to the functioning of the nervous system and normal muscle function; and to the normal growth and development of children

and Niacin (vitamin B3)

Niacin (vitamin B3) is necessary for the release of energy from food and for the normal structure and function of skin and mucous membranes, and contributes to the reduction of tiredness and fatigue

.

Seafood is a highly nutritious food and is a great source of protein

Protein is necessary for tissue building and repair, normal growth and development of bone in children and adolescents aged 4 years and over, and contributes to growth and maintenance of muscle mass

. Many species are low in saturated fat and a number of them are a good source of Omega 3

Omega 3 is a group of fatty acids that contribute to heart health

.

Tips

Bluenose flesh has medium to thick moist flakes and can be cooked using most methods - try it: baked; on the bbq; marinated; poached; in soup/chowder; or fried.

Buying & Storage Tips

When buying whole bluenose, always check the...
EYES: Bright and clear cornea, shiny black pupil
GILLS: Rosy pink pastel coloured gills
SKIN: Bright, with a luminous sheen

When buying bluenose fillets, always check the...
FLESH: semi-transparent and glossy
If the fish looks sticky or mushy then it is not fresh.