Australian bartail flathead (Platycephalus australis), first described by Imamura, 2015 is a large fish in the family Platycephalidae (order Perciformes). Adults typically reach 47.70 cm in maximum length. It inhabits marine coastal and open-ocean environments. It occurs in Subtropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator.
Dorsal spines (total): 8 - 9; Dorsal soft rays (total): 13 - 14; Anal soft rays: 13. This species is distinguished by the following set of characters: D1 I (a small isolated spine anteriorly); D2 13-14, usually 13: A 13; pectoral-fin rays 19-21, usually 20; gill rakers 1-2 + 3-8 = 4-10 (number tends to decrease with growth); postorbital length 51.6-63.6% HL; snout, area anteroventral to eye, interorbit, and occipital region scaled; upper iris lappet usually simple and triangular; with a finger-like interopercular flap; upper jaw without large caniniform teeth; no teeth on dorsal surface of anterolateral edge of upper jaw; palatine teeth in two rows; vomerine teeth usually in one row; caudal fin with a yellow marking on midline when fresh .Cross section: flattened.
Behavioural data for Australian bartail flathead is currently being reviewed.
Marine; demersal. Subtropical; 22°S - 28°S West Pacific: Australia.
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