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The roughhead grenadier is found in the North Atlantic Ocean at depths between 200 and 2,000 metres (660 and 6,560 ft) and water temperatures below 5.4 °C (41.7 °F). [4]
They are found at depths from around 200 meters (660 feet) to greater than 3,000 meters (9,800 feet). They normally prefer temperatures of between 1 and 4 °C (34 and 39 °F), although one species, the Antarctic roughhead (Macrourus whitsoni), has been collected at temperatures which were slightly below 0 °C (32 °F). [1]
They range in length from about 10 cm (3.9 in) in Hymenogadus gracilis to 2.1 m (6.9 ft) in Albatrossia pectoralis. Several attempts have been made to establish a commercial fishery for the most common larger species, such as the giant grenadier, but the fish is considered unpalatable, and attempts thus far have proven unsuccessful. [3]
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Like their infantry grenadier counterparts, these horse-mounted soldiers were chosen for their size and strength (heavy cavalry). In modern warfare , a grenadier is a specially trained soldier operating as part of a fireteam , proficient in the use of limited high-angle indirect fire over " dead zones ".
The roundnose grenadier is a batch spawner [3] and is believed to migrate to the vicinity of Iceland to spawn in late summer or autumn. [4] The females reach maturity when they are nine to eleven years old and the males when they are rather younger. [6] Up to 35,000 eggs can be produced at a time. [4]
The World Bank Group is the globe's most prestigious development lender, bankrolling hundreds of government projects each year in pursuit of its high-minded mission: to combat the scourge of poverty by backing new transit systems, power plants, dams and other projects it believes will help boost the fortunes of poor people.
The deepwater grenadier is very large for its genus, measuring up to 129 cm (4.23 ft) and 14 kg (31 lb). [8] Olfaction and taste are important senses for finding prey, which is unsurprising as it lives in the near-total darkness of the deep sea. [9] [8] It has a swim bladder, showing that it is a mobile forager. [10]