[3] This genus is classified in the family Triacanthidae within the suborder Triacanthoidei alongside the Triacanthodidae.

[6] Triacanthus biaculeatus has a lower, scaly surface of the pelvis that is nearly as wide at the front as it is at the rear and which does not taper to a point.

The upper part of the body is sivery bluish-grey with the lower hal;f being silvery-grey.

[1] Triacanthus biaculeatus is found in the Indian Ocean and the Western Pacific Ocean where it has been recorded from the Persian Gulf, Gulf of Oman and the Arabian Sea east into the Pacific as far as northern Australia and north to central Honshu in Japan.

[8] The short-nosed tripod fish is found on sand or mud flats along coasts and in estuaries as deep as 60 m (200 ft) where it feeds on benthic invertebrates.