Yellowfin tuna experience such a drastic transformation in their size right from being tiny marine creatures to being one of the biggest predators at sea, they eat a wide variety of prey, throughout their lives. Like all other fishes, when they are young they feed on zooplankton but they fend themselves for bigger prey as they grow in size.
As adults, they prey on large fishes and squids. Similarly, yellowfin tuna is also the feed of a large number of predators. Fish that specialize in eating plankton, feed as soon as they hatch. At that stage of life, their numbers reduce drastically.
Those who are not eaten, survive to be one of the biggest predators. Adult Yellowfin tuna fear on the threat of the largest of whales and sharks.
It is known that This is an important participant of the migratory process along-with the other fishes who carry out long migrations every year. These migrations go hand in hand with their food needs and spawning activities. This species reproduces through the release of millions of ovules. And sperm in the water column at the same time by the females and males respectively. This process is called diffusion or spawning.
This method increases the likelihood of fertilizing eggs and decreases the chances of harm by egg predators. Although almost all fish have cold-blood, yellowfin tuna has a special blood vessel structure. Its name is countercurrent exchanger, which allows them to maintain a higher body temperature than the surrounding water.
This adaptation gives them a great advantage when they hunt in cold water, allowing them to move faster and smarter. These fishes are very fast at swimming. There is a need for yellowfin tuna to constantly keep swimming just like the other shark species.
Distribution And Habitat
This yellowfin tuna is in tropical and subtropical waters around the world with the exception of the Mediterranean Sea. It inhabits areas that have a temperature of 18 to 31 degrees Celsius.
Although it normally inhabits deep areas, yellowfin tuna can approach the shores of the coasts if the temperature. And the clarity of the water is adequate and if there is plenty of food. This happens more frequently on the coasts of Hawaii, on the coasts of the Maldives, on Ascension Island, and on the Caribbean and Western Pacific islands.
It tends to travel in groups with others similar in size and even meets with other tuna species and travel together. He is a really fast swimmer thanks to the ability to fold his fins.
Yellowfin Tuna Feed
It is a carnivorous fish and opportunistic predator; including in its diet species of crustaceans, mollusks and other fish. Since it is capable of reaching high speeds, fast prey such as mackerels.