Marline Fish

Marlins are distinguished by their long, stiff dorsal fin that juts forward to form a crest, their spear-like snouts or bills, and their elongated bodies.

Among the quickest swimmers in the ocean are marlins. However, vastly inflated speeds, based on outmoded or untrustworthy reports, are frequently stated in popular literature.


The Atlantic blue marlin, Makaira nigricans, is one of the largest species; it may grow up to 5 m (16 ft) in length and weigh up to 820 kg (1,810 lb). The black marlin, Istiompax indica, can grow up to 5 m (16 ft) in length and weigh up to 670 kg (1,480 lb). In tropical regions, these fish are well-liked for sports. Overfishing has put the Atlantic blue marlin and white marlin in danger of extinction. 

Among the biggest, swiftest, and most identifiable fish in the world are blue marlins. This large fish sticks out in a large ocean thanks to its spear-shaped upper mouth and azure blue and silvery white bodies.

The large, pointed bill of the blue marlin fish is one of its most distinctive characteristics. With the ability to grow nearly as long as the fish itself, this “sword” is used to cut through schools of tiny fish and stun larger prey, such squids and tuna.

Instead of internal fertilization, blue marlin breed externally, with the male releasing his sperm and the female releasing her eggs into the water column. Fertilization happens once the sperm locate the eggs.

There are various species of marlin; the most popular ones are as follows:

The blue marlin, or Makaira nigricans, is one of the biggest and most well-known species of marlin. They can grow to huge sizes, with some individuals reaching lengths of up to 14 feet (4.3 meters) and weights of over 2,000 pounds (900 kilograms). They are distinguished by their stunning blue coloration. All across the world, they can be found in warm oceanic waters.

The following is a list of the exact warning indicators of a blue marlin:

  • a back color of cobalt blue that becomes lighter in the belly and silver on the sides. Its light blue stripes never get darker after it dies.
  • a front dorsal fin oriented forward that is never higher than the maximum body depth
  • Side fins, or pectorals, can be folded back against the body and are pliable.
  • A blue marlin’s hairstyle is never longer than the fish, particularly if the fish is large.
  • The body as a whole has a cylindrical form.

Istiompax indica, or black marlin, resemble blue marlin in size and appearance but are typically black or dark blue in color. They are coveted by sport fishermen and can be found in the Pacific and Indian Oceans.

The best indicators that you’ve snagged a Black Marlin are listed below:

  • Dimly lit dark blue back advancing toward a silver belly.
  • body depth compared to dorsal fin low (shorter mohawk than most Marlin).
  • Compared to other species, the bill and body are comparatively shorter.
  • inflexible pectoral fins that cannot be flattened

The striped marlin, or Kakikia audax, is distinguished by its characteristic blue stripes running the length of its body. It is smaller than both black and blue marlin. They are recognized for their spectacular leaps when hooked and can be found in the Pacific Ocean.

The following characteristics are distinctive to a Striped Marlin:

  • prominent, permanently-present pale blue streaks that persist even after death.
  • a dorsal fin with a point that may be comparatively taller than its body dept.
  • a more compressed, leaner, and slimmer body form.
  • Penisal fins that are pointy and flexible

The smallest species of marlin, the white marlin (Kajikia albida), is mostly found in the Atlantic Ocean. In the eastern United States, sport fishermen frequently target this species, which are distinguished by their silver or white coloring.

Due to their aggressive feeding habits, marlin frequently feed on smaller fish and squid that are found close to the ocean’s surface. Because of their size and difficulty, sport fishers highly value their catches. Because marlin populations are susceptible to overfishing, catch and release methods are frequently promoted.

The white marlin is quite simple to recognize. Here are some things to be aware of:

  • a dorsal fin that is rounded and frequently extends their body depth.
  • a paler, occasionally green hue
  • spots on the abdomen, as well as the anal and dorsal fins.


Around the world, marlin fishing is a well-liked pastime in many coastal areas, and catching these magnificent fish is the focus of numerous competitions and events. When pursuing these species, anglers usually utilize heavy equipment and lures made specifically to attract marlin.

In the sportfishing world, marlin is a highly sought-after and well-liked species. Billfish are a kind of predatory fish distinguished by their long, sword-like bills, or rostrums. When hooked by fisherman, marlin are renowned for their amazing strength, size, and acrobatic displays.

Scroll to Top