Needlefish

The needlefish is a thin fish.

It has a long, narrow beak. This beak has many sharp teeth.

Young fish eat tiny bits of food. Older fish eat small fish instead.

These fish live in the sea. Some live in rivers too. They often swim near the top of the water. Some fish swim in groups with tuna.

Needlefish can jump out of the water. They like to jump near bright lights at night. They can swim very fast when they leap.

Some small fish help clean them. It is a busy life for a needlefish!

The needlefish is a very slender fish.

It has a long, narrow beak. This beak has many sharp teeth.

Most needlefish live in the ocean. Some live in rivers or salty water. They swim near the surface of the sea. Young needlefish eat plankton. Plankton are tiny bits of life in the water. Once their beak grows, they eat small fish. They also eat shrimp and insects.

Needlefish are clever hunters. They use a trick called Snell's Window. Light bends when it goes through water. This makes the fish look blurry to their prey. This helps them get very close before they strike.

These fish can jump fast. They can leap up to 1.5 meters. At night, they jump toward bright lights. This can be dangerous for people. Their sharp beaks can cause deep wounds. Some people have been hurt or killed by these jumps.

Small fish often clean the needlefish. This helps keep them healthy.

Needlefish are slender fishes that live near the water's surface.

They are part of the Belonidae family. Most of these fish live in the salty ocean. However, some types live in brackish or fresh water too. For example, the genus Strongylura lives in many environments. Other groups like Belonion only live in fresh water. These fish are important parts of the sea. They are often found in warm, subtropical waters. Some also live in cooler, temperate waters during the winter.

These fish have a very special way of working. Their most famous part is a long, narrow beak. This beak is filled with many sharp teeth. When they are young, their beaks look different. The upper jaw is very small in juveniles. These young fish eat tiny plankton. Once the upper jaw grows to full length, they change their diet. They begin to hunt smaller fish instead. They also eat krill, insects, and small swimming crustaceans. They even use a trick called Snell's Window to hunt. Light bends as it moves through the water. This makes the needlefish look blurry to its prey. This helps them get very close before they strike.

People have studied these fish for a long time. In Europe, the name "garfish" was once used for the species Belone belone. Later, in the 18th century, European settlers used that same name for different fish in North America. These North American fish are called gars. Even though they look similar, needlefish and true gars are not closely related. Scientists also group needlefish in the order Beloniformes. They belong to a larger group called the superfamily Scomberesocoidea. This group includes the sauries, which are in the family Scomberesocidae.

There are many interesting facts about how they live. Needlefish can jump up to 1.5 meters out of the water. They often swim in schools. In the North Atlantic, Belone belone swims with tuna. Some small ones have even been seen in the Mediterranean Sea. One small species is Xenentodon cancila from Southeast Asia. It grows to about 40 cm long. People sometimes keep it in aquariums. However, it is a delicate fish for advanced owners.

Because they swim at the surface, needlefish can be a danger. They often leap over the decks of small boats. Artificial lights at night can make them very excited. They might dive toward the light at high speeds. This can cause deep wounds with their sharp beaks. In the Pacific, some communities see them as a bigger risk than sharks. Many serious injuries have happened over the years. In 1977, a boy in Hawaii was killed by a jumping fish. In 2007, a boy in Vietnam died from a beak strike. In 2024, a fisherman in the Philippines also died after being pierced.

Needlefish belong to the family Belonidae. They are slender, piscivorous fishes. This means they primarily eat other fish. Most needlefish live in shallow marine habitats. They are also frequently found on the surface of the open sea. Some specific genera inhabit different environments. For example, the genus Strongylura lives in marine, brackish, and freshwater environments. Other genera, such as Belonion, Potamorrhaphis, and Xenentodon, are confined to freshwater rivers and streams.

The physical structure of a needlefish is very specialized. They have a single dorsal fin located far back on their bodies. This fin sits almost opposite to the anal fin. Their most distinctive feature is a long, narrow beak. This beak contains multiple sharp teeth. The development of this beak changes as the fish grows. In juveniles, the upper jaw is much smaller than the lower jaw. This gives young needlefish a half-beak appearance. As they reach adulthood, the upper jaw reaches its full length. This physical change also shifts their diet. Juveniles eat plankton, but adults switch to hunting fish.

Needlefish use clever methods to catch their prey. They hunt smaller fish, krill, small cephalopods, and insects. One fascinating hunting method involves a phenomenon called Snell's Window. This occurs because of light refraction, which is the bending of light as it moves through water. When a needlefish leaps at a shallow angle to ambush prey, light refraction can help. The edges of the window appear distorted to the prey. This distortion disrupts the image of the leaping needlefish. This allows the fish to get within a very short distance before striking.

The history of the name "garfish" is quite interesting. Needlefish closely resemble North American freshwater gars from the family Lepisosteidae. They both have elongated bodies and long, narrow jaws with sharp teeth. However, they are only distantly related. In Europe, the name "garfish" was originally used for the species Belone belone. During the 18th century, European settlers applied the name to the North American gars. This created a naming confusion between two very different types of fish.

Needlefish are most common in subtropical waters. However, some species inhabit temperate waters during the winter. Some species exhibit social behaviors, such as swimming in schools. In the North Atlantic, the species Belone belone often swims in schools alongside tuna. Some small specimens have recently been observed in the Mediterranean Sea. In Southeast Asia, the species Xenentodon cancila is sometimes kept in aquariums. This species grows to no more than 40 cm in length. Because it is a delicate fish, it is best suited for advanced aquarists.

While they are fascinating, needlefish can be dangerous to humans. They are ray-finned beloniforms capable of short jumps. They can leap up to 1.5 meters out of the water. Because they swim near the surface, they often leap over the decks of shallow boats. Artificial light at night can excite them. This causes schools to dive toward the light at high speeds. Their sharp beaks can cause deep puncture wounds. In some Pacific Islander communities, needlefish are considered a greater risk for injury than sharks.

Many serious injuries and deaths have been documented. In 1977, a 10-year-old boy in Hawaii was killed by a needlefish strike. In 2007, a 16-year-old boy in Vietnam was killed by a beak strike while diving. In 2010, a kayaker in Florida was nearly killed by a crocodile needlefish. In 2014, a Russian tourist in Vietnam was paralyzed when a fish bit her neck. More recently, in 2024, a 59-year-old fisherman in the Philippines died after being pierced in the stomach. These incidents show how high-speed jumps can lead to severe medical emergencies.

Taxonomically, needlefish are quite complex. They are classified within the order Beloniformes. Along with the sauries of the family Scomberesocidae, they form the superfamily Scomberesocoidea. This is one of two superfamilies in the suborder Exocoetoidei. The other group includes the ricefishes of the family Adrianichthydae. Scientists have studied the relationship between the genus Belone and the sauries. They have concluded that Belone is the sister group to the sauries. This means the Belonidae family is only monophyletic if the sauries are included within it.