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Swordfish use their swords to knock fast, agile prey off balance during high speed chases, incapacitating them for easy consumption. 1. 2. The need for speed has driven their evolution. In order to outmanoeuvre their prey, swordfish have evolved a body plan that prioritises swimming performance above all else.
The swordfish’s bill differs from those of the other billfishes by being flat and blunt, rather than round and pointed. Like many open ocean bony fishes, swordfish start out as extremely tiny larvae, no more than a few millimeters long and weighing only a few hundredths of a gram. Soon after hatching, they already have a visible bill.
Overview. The swordfish is an iconic, fast-swimming and peculiar predator of the Mediterranean Sea.Its fishery contributes significantly to the socio-economic activity in the Mediterranean region-especially in Greece, Italy and Spain-where swordfish is consumed the most.When sold fresh, its price tag can reach up to €24 per kilo.
31 de jul. de 2012 · Swordfish have a brownish-black back and light underside. They have a tall first dorsal fin and distinctly forked tail. They can grow to a maximum length of over 14 feet and weight of 1,400 pounds. Females are larger than males. While young swordfish have spines and small teeth, adults do not have scales nor teeth.
Broadbill swordfish are reported to spawn in the upper layers of the water column, from the surface to a depth of 75 m (Ref. 43). Estimates of egg numbers vary considerably, from 1 million to 16 million in 168,000 g female (Ref. 9742 ) and 29 million in a 272,000 g female (Ref. 30372 ).
The Swordfish has a very long flattened bill and a strong keel on the caudal peduncle. It has a short-based dorsal fin that is well separated from the second dorsal fin. The species lacks teeth, scales and pelvic fins. It is blue to brown above fading to silver or light brown below. The membrane of the first dorsal fin is usually black.
The Fairey Swordfish is a biplane torpedo bomber, designed by the Fairey Aviation Company.Originating in the early 1930s, the Swordfish, nicknamed "Stringbag", was principally operated by the Fleet Air Arm of the Royal Navy.It was also used by the Royal Air Force (RAF), as well as several overseas operators, including the Royal Canadian Air Force (RCAF) and the Royal Netherlands Navy.
