Triacanthus biaculeatus Bloch, 1786, East Indies.
OTHER COMMON NAMES
English: Short-nosed tripodfish; Japanese: Gima.
Body oblong and compressed, with a long caudal peduncle, a deeply forked caudal fin with rounded lobes, a pronounced snout in the head, and a prominent dorsal spine. The dorsal fin has 20–26 soft rays, and the anal fin has 13–22 soft rays. Body color is silvery with a yellowish hue. The caudal fin is pale yellow and somewhat clear at the lobes. The fins are pale or milky to clear white, except for the dorsal spine, which is black at the base. Grows to at least 11.8 in (30 cm) in total length.
Indo-West Pacific region from the Persian Gulf east across the Indian Ocean to the east coast of Australia and north to China and southern Japan.
A shallow-water bottom-dwelling species in tropical and subtropical waters. Prefers sand or mudflats of estuaries and inshore coastal waters. Depth range to 197 ft (60 m).
Not well known.
FEEDING ECOLOGY AND DIET
This species forages for benthic invertebrates.
Not well known but probably has demersal eggs, perhaps in a nest, with parental care. The larvae are pelagic.
Not listed by the IUCN.
SIGNIFICANCE TO HUMANS
A minor commercial and subsistence species that also is used in Chinese medicine.
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