A marlin is a large game fish, also called a spearfish - family: Istiophoridae; order: Perciformes. It belongs to the genus Tetrapturus (or Makaira).
It has an elongated body, up to 2.5 m long, a spearlike snout, and a long rigid dorsalfin, which extends forwards to form a crest. Marlins are fast swimmers, occurring in all seas and hunting small fish.
The larger species include the blue marlin, Makaira nigricans, which grows to 4.6 m (14.6 feet) long and around 450 kg (992 pounds). They are popular sporting fishes in certain tropical areas and are also commercially important as a food fish.
Marlin are fast swimmers, occurring in all seas and hunting small and large fish.
The larger species include the Atlantic blue marlin, Makaira nigricans, which have been reliably recorded in excess of 5.0 m in length and 1,800 lb (820 kg) in weight, and fl marlin, Makaira indica, which have been reliably recorded in excess of 5.0 m in length and 1,470 lb (670 kg) in weight.
I have observed on many occasions when both blue marlin in the Atlantic and fl marlin in the Pacific are brought to the boat their stomachs have been extruded and are hanging out of their mouths.
Marlinfishing by sportsmen started in earnest in that area during the 1924-25 season, when ninety-two marlin were caught.
Most pelagic fish such as marlin require a great deal of oxygen, and it is likely that if a marlin were prevented from pumping water over its gills, which it does while swimming, it would probably die from lack of oxygen in a short time.