Common dolphin is the name given to two species (and possibly a third) of dolphin making up the genus Delphinus.
Before the mid-1990s, taxonomists identified only one species in this genus, the dolphin Delphinus delphis general. Modern Cetologists usually recognize two species - the dolphin Short-beaked common, defending Delphinus delphis systematic name, and long-beaked dolphin Delphinus capensis general. Some studies show that a third species, the common dolphin Emirates (D. tropicalis), can be characterized by extremely long and thin beak and found in the Red Sea and the Indian Ocean.
Common dolphin dolphin is not popular imagination despite its name, a difference that is owned by dolphin bottle as widely used in marine parks and appearance on the television series Flipper. However, this dolphin is most often represented in art and literature of ancient Greece and Rome.
The two species of common dolphins are medium sized dolphin. Adults range between 1.9 and 2.5 meters (6.2 and 8.2 ft) long, and can weigh between 80 and 235 kilograms (180 and 520 lb), although the range between 80 and 150 kilograms (180 and 330 lb) more generally. Men generally longer and heavier. Color pattern on the body is not normal. Dark back and white belly, while on each side is hourglass pattern in gray, yellow or gold in front and dirty gray in back. They have long, thin rostrums up to 50-60 small, sharp teeth on each side of the jaw mutually respectively.
Although historical practice genus Delphinus lumping them into one species, dolphins are widely distributed show a wide range of sizes, shapes and colors. It last for decades more than 20 different species in the genus has been proposed. Scientists in California in 1960 concluded that there are two species - the long and short beaked beaked. This analysis essentially confirmed by a further study of genetic in the 1990s. The study also shows that a third species (D. tropicalis, common name usually common dolphin Arabic), characterized by extremely long and thin beak and found in the Red Sea and the Indian Ocean, may be distinguished from the long-beaked species. Standard taxonomic works of seconds to realize this is just as various regions.