Bartail flathead
A widespread marine flathead found across the Indo-Pacific.
The bartail flathead is a ray-finned fish in the family Platycephalidae. It inhabits sandy and muddy bottoms in the Indian and Pacific Oceans. Fishers value it for food and traditional medicine. The species has spread into the Mediterranean Sea via the Suez Canal.
- Reaches a maximum length of 100 cm
- Invaded the Mediterranean Sea via the Suez Canal
- Used in Chinese traditional medicine
- Ambush predator feeding on fish and crustaceans
- Juveniles can enter freshwater river reaches
What it is
This fish belongs to the flathead family. It has a depressed head that is mostly smooth, with low ridges but no spines on the main skull plates. A short blunt spine sits before the eye, and two strong spines curve slightly upward at the preoperculum. The mouth holds wide bands of tiny teeth on the jaws, plus canine-like teeth on the vomer and a single row on the palate. The first dorsal fin starts with one separate spine followed by seven to nine more. The second dorsal and anal fins each have thirteen soft rays with deep notches between them. The body is brownish with faint dark bands across the back. The head shows small spots inside pale rings. The lower side is yellowish. Fins carry rows of dark spots, except for the tail fin. The tail features a central black stripe with two diagonal bands above and below it.
Where it lives
Its range covers the Indo-Pacific region. You can find it from the Red Sea and eastern Africa to the Philippines. It lives as far north as Japan and south to Papua New Guinea. Records from northern Australia now refer to a different species, the Australian bartail flathead. Since 1953, this fish has appeared in the Levantine waters of the Mediterranean Sea. This presence likely results from migration through the Suez Canal. It dwells at depths between twenty and two hundred metres. The substrate is usually sand or mud. These areas are often near reefs or seagrass beds.
How it lives
It acts as an ambush predator. The diet consists mainly of other fishes and crustaceans. Juveniles sometimes swim into the freshwater sections of rivers. Adults stay in marine environments. They hide on the seabed to surprise their prey. The specific hunting tactics rely on camouflage provided by their mottled colouring. This allows them to blend into the sandy or muddy bottom. They wait motionless until prey comes within striking distance.
Fish and people
Fishers catch this species using handlines and seine nets in shallow water. Trawls are also used at depths up to thirty metres. The flesh is sold fresh and regarded as good eating. In Chinese traditional medicine, it serves as an ingredient. This use reflects cultural practices rather than modern clinical advice. The fish supports local fisheries across its wide distribution. Its ability to thrive in various coastal habitats makes it a consistent target for commercial and artisanal fishing operations.
Questions people ask about Bartail flathead
Where does the bartail flathead live?
It lives in the Indian and Western Pacific Oceans, from the Red Sea to Japan and Papua New Guinea. It prefers sand and mud bottoms at depths of 20 to 200 metres, often near reefs.
Is the bartail flathead good to eat?
Yes, it is considered a good food fish. The flesh is sold fresh in markets. It is caught using handlines, seine nets, and trawls in shallow coastal waters.
Has this fish been found outside its native range?
Yes, it has invaded the eastern Mediterranean Sea. Records show it in Levantine waters since 1953, likely entering through the Suez Canal from the Red Sea.
Good reading and sources
- Bartail flathead on WikipediaEncyclopedia
- More photos on Wikimedia CommonsPhotos
- Wikidata recordOpen data
The facts on this page come from the Wikipedia article "Bartail flathead", 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.
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