Blackbanded Flathead, Rogadius patriciae Knapp 1987

Other Names: Black-banded Flathead

A Blackbanded Flathead, Rogadius patriciae, in Lembeh Strait, Sulawesi, Indonesia. Source: Roger Steene / FishBase. License: All rights reserved

A mottled pale brown to tan flathead with the outer part of the spinous dorsal fin black, darker spots on the pectoral, dorsal and anal fins, dusky pelvic fins with a narrow white margin, and a whitish caudal fin with 2-3 elongate blackish bands on the lower part, and oblique black bars several blackish blotches on the upper caudal-fin lobe.

Cite this page as:
Australian National Fish Collection, CSIRO & Bray, D.J. 2017, Rogadius patriciae in Fishes of Australia, accessed 01 Oct 2023,

Blackbanded Flathead, Rogadius patriciae Knapp 1987

More Info


Exmouth Gulf and the Northwest Shelf, Western Australia, to the Timor Sea northwest of Bathurst Island, Northern Territory, and Torres Strait E of Cape York, to ESE of Lady Musgrave Island, Great Barrier Reef, Queensland. Elsewhere the species occurs in the tropical, west Pacific. Recorded internationally from Sulawesi, Indonesia, New Caledonia, Philippines, Taiwan, and Ryukyu Islands, Japan. 

Inhabits silty sand and rubble areas, sometimes near reefs, in bays and coastal waters at depths of 14-160 m.


Dorsal fin IX or I,VIII, 11-12 (usually 12); Anal fin 11-12 (usually 11); Pectoral fin 20-23 (usually 22); Pelvic fin I, 5; Lateral line scales (pored) 49-55 (usually 52 or 53).

Body elongate, moderately depressed. Head large (length ~43% SL), moderately depressed, lower side of head unicarinate; supraorbital ridge bearing many fine serrations; preorbital spine lacking, several small serrations present; preocular spine 1; eyes large (~27% HL), ocular flap absent; teeth on jaws low, on palate low, sharp and slightly recurved; teeth on vomer in two parallel longitudinal bands. Preopercular spines 2-5 (usually 3 or 4), uppermost longest, with an accessory spine on its base; antrorse spine short, weak, or absent; gill rakers 1, 5-7; interopercular flap absent. Scales small, finely ctenoid dorsally, cycloid ventrally, covering body and most of head behind eyes; oblique scale rows slanting backward above lateral line about equal to number of lateral-line scales; lateral-line scales 49-55 (usually 52 or 53), anterior 4-11 bearing a spine or ridge. scale pores of lateral line with 2 openings to the outside. First dorsal fin spinous, base almost as long as base of second dorsal fin, first spine very short, attached to second spine by a low membrane, following spines much longer. Second dorsal fin with moderately long base, anterior rays longest, nearly as long as longest first dorsal spines. Anal fin similar in shape, opposite and slightly longer-based than second dorsal fin. Caudal fin truncate to slightly rounded. Pectoral fins moderately elongate. Pelvic fins long, reaching to about anal fin origin.


Maximum total length about 27 cm, commonly to 20 cm.


Body and head brown dorsally, brown band crossing nape to preopercular spines, another wide band below eye; paler below. Outer half of spinous dorsal fin black; soft dorsal fin with 4-6 series of black checks. Anal fin whitish with dark horizontal band centrally, becoming black posteriorly. Caudal fin white with 2 or 3 elongate longitudinal black bands, upper lobe with oblique black bars and sometimes yellow tinting to white background; pectoral fin fawn with lower half dark olive, margin white; pelvic fins black with outer edge and ray tips white.


May be taken as bycatch in commercial trawls.


Similar Species


The species is named in honour of Patricia J. Kailola in recognition of her many contributions to the knowledge of the fishes of north-western Australia and southern Indonesia.

Species Citation

Rogadius patriciae Knapp, 1987, Mem. Natl. Mus. Vict. 48(1): North-West Shelf. (20°03'-04'S, 116°09'-10'E), 64 m.


Australian National Fish Collection, CSIRO & Bray, D.J. 2017


Australian Faunal Directory

Blackbanded Flathead, Rogadius patriciae Knapp 1987


Gloerfelt-Tarp, T. & Kailola, P.J. 1984. Trawled Fishes of Southern Indonesia and Northwest Australia. Jakarta : Dir. Gen. Fish. (Indonesia), German Tech. Coop., Aust. Dev. Ass. Bur. 406 pp. (as Suggrundus sp. 2)

Imamura, H. 1996. Phylogeny of the family Platycephalidae and related taxa (Pisces: Scorpaeniformes). Species Diversity 1(2): 123-233 

Imamura, H. 2007. Rogadius mcgroutheri, a new species of flathead (Teleostei: Platycephalidae) collected from eastern Australia and New Caledonia. Ichthyological Research 54: 303-307 

Knapp, L.W. 1987. New Australian fishes. Part 13. Two new species of Platycephalidae. Memoirs of the National Museum of Victoria 48(1): 53-55 PDF available, open access

Knapp, L.W. 1999. Family Platycepalidae. pp. 2385-2421 in Carpenter, K.E. & Niem, T.H. (eds). The Living Marine Resources of the Western Central Pacific. FAO Species Identification Guide for Fisheries Purposes. Rome : FAO Vol. 4 pp. 2069-2790.

Sainsbury, K.J., Kailola, P.J. & Leyland, G.G. 1984. Continental Shelf Fishes of Northern and North-Western Australia. Canberra : Fisheries Information Service 375 pp. figs & pls.(as Suggrundus sp. 2)

Quick Facts

CAAB Code:37296008

Danger:Venomous spines

Depth:7-160 m

Habitat:Silty sand/rubble bottoms

Max Size:27 cm TL

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CAAB distribution map