milijunction.blogg.se - Are bluefish good to eat

Mackerel tuna: despite the name, they are part of the tuna family and not a type of mackerel.At the risk of becoming endangered because they have a slow reproduction rate. Longtail tuna: found in the Indian and Pacific Oceans.Their habitat is the Pacific and Atlantic Oceans. Little tuna: only grow to about two feet long and 30 pounds in weight.They are highly migratory and can be found in most oceans. Frigate tuna: about 25 inches long and 3-4 pounds.Bullet tuna: these small tuna live in the Mediterranean Sea and the warmer parts of the Pacific Ocean and grow to around 20 inches.

Black skipjack tuna: prefers coastal waters and can be identified from the horizontal stripes on their back.Blackfin tuna: grows to about 3 feet long and weighs 45 pounds on average and is found in the Atlantic Ocean.Bigeye tuna: what sets them apart is their large eyes, which is how they got their name.

Atlantic bluefin tuna: can weigh over 1,000 pounds and are at serious risk from overfishing.

Albacore tuna: found in the Pacific Ocean from British Columbia in the north to California in the south.

There are fifteen main species of tuna with some subspecies. The biggest tuna species, which include the Atlantic bluefin and the Bigeye, can weigh over 500 lbs and grow to ten feet long. Image Credit: hakaimagazine How many species of tuna are there?ĭid you know that there are many varieties of tuna? Some of the smaller tuna only grow up to a few pounds. A bluefin can move 8,000 meters down through the water in search of its prey. The bigeye tuna can descend about 1,500 feet in the morning for cooler waters and return to warmer waters nearer the surface in the evening. Many tuna species can also travel vertically. For example, scientists have discovered that bluefins can swim from North America to Europe and back several times a year. Tuna has strong muscles which allow them to swim great distances. Their tails are shaped like the crescent moon. Tunas have two dorsal fins on their back and they can flatten one of them to reduce resistance in the water. This is because they can maintain their body temperature when traveling between different temperature waters after their prey. Unusually for fish, they are as comfortable in the cooler coastal waters of Iceland as they are in the tropical waters of Mexico. Tuna are found in both tropical and temperate waters because they are warm-blooded fish.