Needlefish, also called the giant needlefish are elongated, predatory fish renowned for their distinctive, needle-like beaks and remarkable speed. Inhabiting tropical and temperate oceans worldwide, they are masters of agility and precision, using their streamlined bodies and sharp teeth to capture prey with lightning-fast reflexes.
They have over thirty-five known species around the world, each with unique adaptations and habitat preferences. Some species form large schools, while others exhibit more solitary lifestyles. Their diversity reflects the remarkable adaptability of needlefish within their ecological niches.
Continue reading to learn more about the fascinating world of this fish.
Appearance
Needlefish are elongated with thin jaws filled with sharp teeth. Most species have grey-green-colored skin that is darker above than it is below. This is something common to marine creatures of all sizes—known as countershading. It occurs in other to camouflage the fish, to a degree, from predators above or below it. It has a greenish back, silvery sides, and a thin, bluish-silver stripe along each side.
They are slender, usually between one and thirty-seven inches in length. They have one dorsal fin that’s placed far back along their spines. Their narrow jaws are, by far, their most distinctive feature. As they age, their jaws grow longer in comparison to their bodies. Juveniles have shorter, less distinctive-looking jaws.
Did you know…
The Atlantic needlefish (Strongylura marina) and the houndfish (Tylosurus crocodilus) are among the most prevalent and well-known species. S. marina inhabit the Atlantic Ocean’s coastal waters, often forming large schools. Houndfish, with their distinctive orange-tipped beaks, are formidable predators found in tropical and subtropical oceans, known for their aggressive hunting and leaping abilities.
Habitat
Needlefish are common in the subtropics, but they can be found in temperate waters during the winter. In the wild, needlefish live in groups. They feed and migrate together in small groups. Moving between the adjacent areas, like the Atlantic Ocean. These fish are commonly found on the water’s surface around jetties and reefs. Sometimes, younger fish spend time around bays.
They live in shallow waters, saltwater, brackish water, and even fresh water in tropical areas all around the world.
They range from Maine to Florida in the Atlantic Ocean and then further South to Brazil and the Caribbean. In the Pacific, they live from Mexico to Peru and Japan. Some groups are found around the East Indies down to Australia. Interestingly, the most common North American species are known for swimming alongside tuna.
Diet
Needlefish feed on smaller fish such as killifishes and silversides, crustaceans, small cephalopods, shrimp, and krill. Different species have different preferences. For example, Indian species primarily feed on large crustaceans, while other saltwater species prefer cephalopods.
Reproduction
Needlefish mate between May and April. The males are larger than the females, they ride through the water while mating. They lay eggs in shallow water and migrate to find the correct breeding ground.
They lay up to 100 eggs at a time and hatch in between ten and fifteen days. The newborns are around 1/2 inch in length. During their juvenile period, they primarily eat plankton. This changes as their upper jaw grows to match their longer lower jaw. As they age, they grow to a maximum length of 1.5 meters and live around eight years old.
Threats
Despite their small size, there are several recorded instances of needlefish harming and even killing human beings. Their sharp jaws and teeth are, in specific instances, quite dangerous. This, in combination with their incredible jumping ability, means that fishers and divers have been impaled by the fish’s jaw at high speeds. Their jaws are capable of inflicting deep and even life-threatening injuries.
Natural predates include tuna, dolphins, eagles, hawks, and osprey. They are relatively small fish and therefore make an ideal meal for any predator even slightly larger than they are. The fish are not considered endangered or threatened.
Like all marine creatures, the needlefish is threatened by the effects of human-caused climate change and other threats like pollution, by-catch, habitat encroachment, and overfishing. Lures with tail hooks tend to hook them pretty well.
6 More Fantastic Facts about the Needle Fish
- They have been known to jump out of the water and kill human beings.
- Needlefish are a traditional food source for coastal communities in various regions.
- Their abundance and lively behavior make some species, like the ballyhoo, popular choices as baitfish.
- Some needlefish have green bones! This unusual coloration is due to a bile pigment called biliverdin, which is deposited in their skeletal structure.
- Some species live closer to shore, and others farther out in the open ocean.
- They have a lifespan of around eight years.
FAQs
Is a needlefish a gar?
While needlefish do resemble gars, they are distantly related, to different species. Sometimes they are described using either name.
Do needlefish bite humans?
There are some recorded instances of needlefish biting humans. But, far more common are incidents in which they jump out of the water and pierce human beings with their razor-sharp beaks.
Are needlefish good to eat?
Needlefish are caught, cooked, and eaten by some fishermen. They are considered “good to eat” by some people. But, they are not a staple fish sought after by fisheries.
Can needlefish hurt you?
Needlefish do not intentionally hurt human beings. But, there are recorded instances in which needlefish jump out of the water and pierce human beings with their sharp, thin jaws. This has resulted in injuries and even deaths around the world.
