Spottail needlefish
A coastal needlefish found from the Persian Gulf to Australia.
The spottail needlefish is a slender marine species in the family Belonidae. It inhabits coastal waters and mangroves across the Indian and western Pacific Oceans. This piscivorous fish lays adhesive eggs and can survive buried in mud during low tides.
- Found from Persian Gulf to Australia and Philippines
- Survives low tide by burying in mud
- Eggs stick to objects using surface tendrils
- Feeds mainly on clupeoid fish
- Type species of the genus Strongylura
What it is
The spottail needlefish, also known as the blackspot longtom, belongs to the family Belonidae. It is a slender fish adapted for life in shallow tropical waters. Adults are typically found in coastal zones, though they venture into estuaries and even fresh water. The species is notable for its ability to survive low tide by burying itself in mud. Its body shape is streamlined, typical of needlefish, allowing it to move quickly through dense vegetation and open water alike.
Where it lives
This species occupies a broad range across the Indian and western Pacific Oceans. Its distribution extends from the Persian Gulf in the west to Australia and the Philippines in the east. It thrives in coastal waters and mangrove-lined lagoons. The fish is also recorded in estuarine areas where salt and fresh water mix. Occasionally, it enters purely freshwater environments. This adaptability allows it to inhabit diverse aquatic zones within its geographic range.
How it lives
The spottail needlefish is a predator that feeds primarily on other fish. Its diet consists mainly of clupeoids, which include herrings and sardines. It hunts in coastal and mangrove habitats where prey is abundant. One unusual behaviour involves surviving exposure during low tide. Individuals have been found alive while buried in mud, waiting for the water to return. This adaptation helps it endure fluctuating water levels in intertidal zones.
Breeding and life cycle
Reproduction in this species is oviparous, meaning females lay eggs that develop outside the body. The eggs possess tendrils on their surface. These sticky structures allow the eggs to adhere to objects in the water, such as plants or debris. This attachment prevents the eggs from drifting away in currents. The strategy ensures the developing embryos remain in suitable habitats until they hatch.
Fish and people
It is not widely recognised as a food fish or a target for sport angling in common records. Its primary interaction with humans is likely incidental, given its presence in coastal and mangrove areas where human activity is common. It serves as part of the local ecosystem rather than a direct resource.
Status and threats
No specific threats such as overfishing or habitat loss are mentioned for this particular species. As a widespread inhabitant of coastal and mangrove zones, it may face general environmental pressures, but no specific data confirms its population trend or risk level.
Questions people ask about Spottail needlefish
Where does the spottail needlefish live?
It lives in the Indian and western Pacific Oceans, ranging from the Persian Gulf to Australia and the Philippines. It prefers coastal waters, mangrove lagoons, and estuaries, and sometimes enters fresh water.
What does the spottail needlefish eat?
This species is piscivorous, meaning it eats other fish. Its diet consists mainly of clupeoids, which are small schooling fish like herrings and sardines found in its coastal habitat.
How do spottail needlefish reproduce?
They are oviparous, laying eggs that develop externally. The eggs have tendrils on their surface that allow them to adhere to objects in the water, keeping them secure in the current.
Good reading and sources
- Strongylura strongylura on WikipediaEncyclopedia
- More photos on Wikimedia CommonsPhotos
- Wikidata recordOpen data
The facts on this page come from the Wikipedia article "Strongylura strongylura", 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.
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