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EveryFish
Tylosurus crocodilus

Houndfish

A large pelagic needlefish found in tropical oceans worldwide.

Photo: The Geographical Society of Baltimore, Public domain, via Wikimedia Commons

The houndfish is the largest member of the needlefish family. It inhabits warm waters across the Atlantic, Indian, and Pacific Oceans. Anglers prize it for sport, though its sharp beak poses a risk to humans.

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  • Largest member of the needlefish family.
  • Can jump out of water and injure humans with beak.
  • Found in Atlantic, Indian, and Pacific Oceans.
  • IGFA record weight is 4.88 kg.
  • Eggs attach to objects via surface tendrils.

What it is

The houndfish, also known as the crocodile needlefish, is a substantial marine animal belonging to the Belonidae family. It stands out as the largest species within this group. Adults can reach lengths of up to 150 centimetres and weigh around 6.35 kilograms. The body is stout and cylindrical, featuring a shorter head compared to other needlefishes. Its colouration includes dark blue backs, silver-white sides, and plain white bellies. A distinct keel runs along the tail section, leading to a deeply forked caudal fin. Juveniles are identifiable by anteriorly pointing teeth and a black lobe on their dorsal fins.

Where it lives

This species spans vast areas of the world's tropical oceans. It occurs throughout the Indian and Pacific Oceans, extending from the Red Sea and South Africa eastward to French Polynesia and Japan, and south to Australia. In the Atlantic, it ranges from New Jersey to Brazil in the west, and from Cameroon to Ascension Island in the east. It has also entered the eastern Mediterranean Sea through the Suez Canal. The Mexican needlefish replaces it in the eastern Pacific.

How it lives

Houndfish live as pelagic animals, often found over lagoons and seaward reefs. They may appear as individuals or in small groups. Their primary diet consists of smaller fish. These creatures are known for their agility and tendency to leap out of the water when frightened or attracted to artificial lights used during fishing. This leaping behaviour makes them dangerous to humans, as their long beaks can cause puncture wounds. Several incidents have resulted in serious injuries to snorkelers and kayakers.

Breeding and life cycle

Reproduction involves laying eggs that float on the water surface. Each egg possesses tendrils that allow it to attach itself to floating objects or debris. This strategy helps protect the developing embryos until they hatch. Specific details regarding the timing of spawning or the growth rates of young fish are not provided in the available records.

Houndfish
A drawing made by EveryFish from what this page says. It is a diagram, not a picture of the real fish.

Fish and people

Anglers consider the houndfish a valuable game fish. It is often caught using artificial lights and live bait, such as pilchards. While the flesh is considered good to eat and is usually sold fresh, market demand remains low due to its greenish colour. The International Game Fish Association record stands at 4.88 kilograms. Despite being edible, the primary interaction with humans revolves around sport fishing and the potential danger posed by its jumping habit.

Status and threats

The species appears widespread across multiple ocean basins. However, local populations may face pressures from fishing activities. The entry into the Mediterranean represents a successful expansion of its range. There are no mentioned threats from pollution or habitat loss in the provided text.

Questions people ask about Houndfish

What is the maximum size of a houndfish?

The longest recorded houndfish measures 150 centimetres in length. The largest recorded weight for this species is 6.35 kilograms. These dimensions make it the largest member of its family.

Why are houndfish considered dangerous?

They tend to leap out of the water when frightened or attracted to lights. Their long beaks can cause severe puncture wounds to humans nearby. Documented incidents include injuries to snorkelers and kayakers.

Where can I find houndfish?

They inhabit the Atlantic, Indian, and Pacific Oceans. Their range extends from the Red Sea to French Polynesia. They are also found in the eastern Mediterranean Sea after migrating through the Suez Canal.

Are houndfish good to eat?

Yes, they are considered good to eat and are often sold fresh. However, their flesh has a greenish colour, which limits market demand compared to other fish species.

Good reading and sources

Where this page comes from

The facts on this page come from the Wikipedia article "Houndfish", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryFish rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.

It may contain mistakes, and figures change over time. Nothing here is investment or buying advice. If something is wrong, tell us. Last refreshed 2026-11-15.

Photo credits on this page

The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.

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