Shortbill Spearfish

Shortbill Spearfish (Tetrapturus angustirostris), also known as Hebi fish, is a powerful marlin species native to the Atlantic, Pacific, and Indian Oceans. This group of game fish is typically found in the open waters and is popular for its large size and elongated body with a short beak-like bill. It can reach 2.30 meters, though most are typically less than 1.90 meters. The maximum recorded weight of this game fish is 52 kg.

With its striking appearance and impressive size, this fish is a popular target for sports anglers and a valuable commercial species. This article further explores this fascinating species in detail.

Appearance

The hebi fish is a large predator with a distinctive appearance that makes it easy to identify. An elongated body with a short bill extending from the upper jaw characterizes it.

This unique species’ body is blue or black and silver or white underneath, with vertical stripes along their sides. These stripes can range from pale blue to dark purple and become more pronounced when the fish is excited or hunting. Vertical bars adorn its flanks, adding to its visual allure.

Its streamlined, torpedo-shaped body is built for speed and agility, minimizing drag as it cuts through the water. The dorsal fin is a prominent feature, resembling a high, albeit smaller, sail. This fin can be raised or lowered, providing stability and control during high-speed maneuvers or when herding prey. Long and pointed pectoral fins provide lift, enabling the spearfish to make sharp turns. The pelvic fins are narrow and streamlined, folding into grooves on the body to minimize drag during high-speed chases.

Its bill is a sophisticated sensory organ packed with receptors that can detect minute vibrations and electrical fields emitted by living organisms. This adaptation allows the spearfish to locate prey even in murky water or when hidden, giving it a significant hunting advantage.

Habitat

The shortbill spearfish is found in tropical and temperate waters worldwide, primarily in the Pacific and Indian Oceans. However, they are available in the Atlantic Ocean too. These fish prefer warm, clear waters with temperatures between 68 and 78 degrees Fahrenheit (20 to 26 degrees Celsius).

This species is typically found near the surface, although they can dive to depths of up to 152 meters. The shortbill spearfish is a highly migratory species, traveling long distances for food and spawning grounds. They are often found in warmer waters near the equator during the winter. At the same time, they can be found in cooler waters closer to the poles during the summer.

Diet

The shortbill spearfish is a fierce predator, meaning it feeds on a wide assortment of prey, including squid, octopus, mackerel, and other small fish. They use their sharp bill and impressive speed to hunt these animals in groups. Research shows it can swim up to 50 miles per hour (80 kilometers per hour).

Without a doubt, this makes this species of marlin one of the fastest fish in the ocean.

When hunting, they use their bill to slash at the fish, stunning or injuring it before swallowing it whole. The hebi fish has no teeth, but it has a tough, bony plate in the mouth that aids in crushing its prey.

Reproduction

During the spawning season, the male hebi fish will pursue a female and engage in a courtship dance. This typically occurs in the summer.

During this period, the female releases eggs, and the male fertilizes them externally.

Since the eggs are small and buoyant, they drift in the water column until they hatch. The larval fish is also small and qualifies to be grouped under plankton. So, they also drift in the open ocean for a few days until they mature and develop features that aid them in swimming.

Threats

The hebi fish is a highly valued game fish and a valuable commercial species. As a result, it is under threat from overfishing.

The hebi fish population has been severely depleted in many areas due to commercial fishing using lures and baits and destructive fishing methods such as longlining and gillnetting. Additionally, habitat destruction, pollution, and climate change threaten it.

7 More Curious Facts about Short bill Spearfish

1. The Shortbill Spearfish is one of the smallest and most poorly known species of billfish.
2. They can live at the maximum age of 4 to 5 years of age.
3. Shortbill Spearfish are considered to be edible, with a similar taste to White and Blue Marlin fish, but with a more pronounced taste over Tuna.
4. They are open ocean, deep water fish frequently.
5. It is also known as Japanese Spearfish, Short-nosed Spearfish, and Slender Spearfish.
6. Their maximum weight is recorded to be up to 115 lbs.
7. Hebi has white to pink colored flesh.

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