Which Is the Biggest Fish?
The whale shark is the world’s biggest fish. (The whale which is larger is not a fish but mammal). This giant fish can grow more than 65 feet (19.81 meters) long and weigh more than twice as much as an African elephant.
They have broad, flat heads with short snouts and their backs have an interesting white, yellow, and grey checkerboard pattern. It is unknown how long whale sharks can live; however, scientists believe they can live approximately 60-100 years.
Whale sharks are found in all tropical and warm-temperate seas around the world, preferring water temperatures of 20-25°C. In spite of their size, whale sharks eat only very small fish, and floating plants known as plankton.
In order to eat, whale sharks have to take in a great deal of water along with their food. As they swish the sea water through their gills, the food is filtered out by rows of strainer like gill rakers in their throats.