The Swordfish

The Swordfish - 2

Origin

Swordfish is a ferocious kidnapper, recognizable for its fine, scales-free skin, the lunar codline and the prolonged jawbone as a sword.

It can reach 6 m in length and weighs over 800 kg. His name comes from Greek and Latin (over and sword).

Living fish in tropical waters with temperate climates in the Atlantic, Pacific and Indian Oceans, where they can be found on the surface at depths of 550m. Common sword fish reach lengths of 3m.

The maximum length is over 4.5m and 650kg.

Swordfish are part of the Xiphiidae family. The International Game Fish Assotiation’s have the largest catch of 536kg, a sample taken out of water in Chile in 1953.

Females are larger than males, and swordfish species in the Pacific Ocean are larger than those in the Atlantic Ocean or the Mediterranean Sea.

Swordfish’s Food

Swordfish are predatory animals. Most of the food he consume is fish, calamari and cephalopods.

They use their “sword” to divide into smaller pieces the bigger prey, while the smaller prey is swallowed whole.

The enemies of the swordfish are first and foremost .. MAN. Natural enemies are killer whales, and several other fish. Young ones are hunted and eaten by sharks.

Feeds every day, mostly on the inserted. In the day it can be found at depths of 550m in search of fish benches.

Adults feed on mackerel, barracuda, hake, herring, but also calamari and crustaceans. Also eat other fish (gadids, scombrids, butterfish, etc.).

Swordfish’s Aspect

Like the sawfish, the swordfish was named after the nose. His “sword” is longer than most, if not all “swords” of aquatic fish species. Sword fish has no teeth. Until 1 m length of the young has a lateral strip that gradually disappears.

Until then, he does not use the “sword” to eat. It probably does not have developed dexterity or is soft, fragile and it can break.

They reach a length of 4-5 m and a maximum weight of 650 kg. Females are usually older than males. They have two dorsal fins, one larger followed by a smaller one.

The two fins also have their bellies the same, the big one followed by a small one. Swordfish are light on the stomach, and gradually dorsal wing turns dark. If we look up, we’ll see a fish of dark brown to black.

Swordfish’s Behavior

Adults can reach speeds of up to 100 km / h and therefore move long distances. Swordfish are ectoderme animals.

Like other shark species, they have special organs that provide warmth to their eyes and brain.

Of the over 25,000 species of animals, only 22 are known to have this ability to heat their eyes and brain.

Heat improves their vision and consequently the ability to catch fish. They were also seen in waters with temperatures of 10-15 degrees and depths of 2878m.

Fortunately swordfish is not on the list of extinct animals. It seems to have adapted very well to our times, and it seems that maturity outside of man has very few predators.

Over the past century, the population over the sword began to decline and, following the ‘Give Swordfish a brake’ campaign, the number of specimens stabilized again.

Swordfish’s Reproduction

The swordfish breeding season is during the summer months and takes place at temperatures of about 24gr C. Females, due to their high fertility, carry up to 50 million eggs.

They swim near the coast, just like their larvae that later take on the characteristics of their parents.

Females come in waters with temperatures over 20 degrees of the South Atlantic. Larger adult females can carry more eggs.

They can range from 1 million eggs to 29 million, as it was the most. The eggs are 1.6-1.8mm in diameter, and two days after embryo development begins. The sword is obvious when the larva reaches 1 cm in length.

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