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Blue Grenadier

Macruronus novaezelandiae (Hector 1871)

Diagnostic Description

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Dorsal surface silvery, with a purple or blue-green tinge; plank and belly silvery; fins darker. Body very elongate and compressed with a tapering tail, dorsal and anal fins confluent with the caudal fin (Ref. 33856).
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Recorder
Rodolfo B. Reyes
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Life Cycle

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Female blue grenadier produce about 1 million eggs on average, which are all released at once (Ref. 6390).
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Susan M. Luna
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Migration

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Oceanodromous. Migrating within oceans typically between spawning and different feeding areas, as tunas do. Migrations should be cyclical and predictable and cover more than 100 km.
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Morphology

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Dorsal spines (total): 12 - 13; Dorsal soft rays (total): 96 - 106; Analspines: 0; Analsoft rays: 89 - 93; Vertebrae: 78 - 81
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Trophic Strategy

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Normally found on or near bottom, but may occasionally move up into mid-waters (Ref. 1371). In Australian waters, they are found in dense schools near the sea bed during the day and move up in mid-waters at dusk, to within 50 m of the surface (Ref. 13538). Juveniles are commonly found in estuaries and bays of southern Tasmania (Ref. 26498).
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Biology

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Appear to live usually on or near the bottom, but may occasionally move up into mid-waters. Large adult fish generally occur deeper than 400 m, while juveniles may be found in shallower water (Ref. 9072), more commonly found in large estuaries and bays, and may even enter freshwaters (Ref. 1371). Juvenile specimens and especially adults belonging to the American subspecies, have been caught from the coastal zone to 110 m (Ref. 58452). Form schools. Feed primarily on lantern fishes. In New Zealand, it feeds in midwater on small fish, crustaceans and squid. Oviparous, spawn 1 million eggs on the average which are released all at one time (Ref. 6390). Utilized fresh and frozen; can be steamed, fried, cooked in microwave and baked (Ref. 9988).
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Importance

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fisheries: highly commercial; price category: medium; price reliability: reliable: based on ex-vessel price for this species
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Blue grenadier

provided by wikipedia EN

The blue grenadier (also known as hoki, blue hake, New Zealand whiptail, or whiptail hake, Macruronus novaezelandiae) is a merluccid hake of the family Merlucciidae found around southern Australia and New Zealand, as well as off both the Atlantic and Pacific coasts of South America from Peru to Brazil[1] at depths of between 10 and 1,000 m (33 and 3,300 ft). It feeds in midwater on small squids, crustaceans, and fish. Its length is between 60 and 120 cm (24 and 47 in). It is a slender, silvery fish similar in appearance to the gemfish. The meat of the fish is white and almost always sold in fillets; culinarily it is considered a whitefish.[2]

Commercial use

Australian supermarkets have many hoki products, mainly in pre-packaged processed foods. Often the manufactured meat result is manufactured into a fish cutlet shape and then battered or crumbed to further give a good fresh look.

The hoki is one of the species used in McDonald's Filet-O-Fish, Fish Fingers and McFish sandwiches.[3][4] It was previously served at Long John Silver's and Denny's restaurants in the United States, and continues to be served at Denny's in New Zealand.[3]

The blue grenadier is a very important commercial species in Australia.[5] They are mostly caught in the south-east, off southern New South Wales, Victoria, Tasmania and South Australia and are considered very good eating, particularly when fresh.[5]

Sustainable consumption

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Blue grenadier filet with rice, dill and mustard sauce.

The blue grenadier is the subject of a large commercial fishery industry in New Zealand, which has been certified by the Marine Stewardship Council (MSC) as well-managed and sustainable in March 2001. New Zealand has established a fishing quota of about 100,000 tons.[3] The first MSC certification ended in April 2007. Reassessment of the certification commenced in early 2005 and finished in October 2007.[6] A 2009 New York Times article raised questions over the sustainability of blue grenadier fishing practices around New Zealand,[7] though its conclusions were disputed by New Zealand representatives.[8] However, recent quotas on catches have been reduced by nearly two thirds from 275,000 to 100,000 tons.

In 2010, Greenpeace International added the blue grenadier (hoki) to its seafood red list.[9] The Royal Forest and Bird Protection Society of New Zealand (Forest & Bird) assigns hoki an E grade (red - avoid).[10] Both organisations state damage to the sea floor due to bottom trawling and bycatch of species such as New Zealand fur seals, albatrosses, petrels and basking sharks as the primary reasons for the ratings.

In September 2013, as New Zealand Hoki, it continued to appear on the MSC's list of sustainable fish.[11]

References

  1. ^ Alfredo Carvalho-Filho; Guy Marcovaldi; Claudio L.S. Sampaio; M. Isabel G. Paiva (2011). "First report of Macruronus novaezelandiae (Gadiformes, Merluccidae, Macruroninae) from Atlantic tropical waters" (PDF). Marine Biodiversity Records. 00, e0, 2011 Published online.
  2. ^ "New Zealand Hoki". FishChoice. when cooked is more flavorful than most other whitefish due to its higher fat content.
  3. ^ a b c Broad, William (September 9, 2009), "From Deep Pacific, Ugly and Tasty, With a Catch", The New York Times
  4. ^ Vasquez, Michael (August 24, 2009), "Fish or Fake? DNA Researcher Puts the 'Filet-O-Fish' to the Test", Miami Herald
  5. ^ a b Bray, Dianne. "Blue Grenadier, Macruronus novaezelandiae". Fishes of Australia. Retrieved 26 August 2014.
  6. ^ "Meet the fishers." Marine Stewardship Council. No date. Accessed 2009-09-10
  7. ^ Broad, William (September 9, 2009), "From Deep Pacific, Ugly and Tasty, With a Catch", The New York Times
  8. ^ Gaines, Richard (September 22, 2009), "New York Times' report on food fish raises New Zealand industry's ire", Gloucester Daily Times
  9. ^ Greenpeace International Seafood Red list. No date. Accessed 2012-03-11
  10. ^ "Hoki -- The Best Fish Guide". Forest & Bird. Retrieved 13 December 2014.
  11. ^ "Sustainable Seafood Shopping." Marine Stewardship Council. No date. Accessed 2013-09-28
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Blue grenadier: Brief Summary

provided by wikipedia EN

The blue grenadier (also known as hoki, blue hake, New Zealand whiptail, or whiptail hake, Macruronus novaezelandiae) is a merluccid hake of the family Merlucciidae found around southern Australia and New Zealand, as well as off both the Atlantic and Pacific coasts of South America from Peru to Brazil at depths of between 10 and 1,000 m (33 and 3,300 ft). It feeds in midwater on small squids, crustaceans, and fish. Its length is between 60 and 120 cm (24 and 47 in). It is a slender, silvery fish similar in appearance to the gemfish. The meat of the fish is white and almost always sold in fillets; culinarily it is considered a whitefish.

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