Onigocia grandisquama (Regan 1908)

Onigocia grandisquama. Source: Australian National Fish Collection, CSIRO. License: CC BY Attribution-Noncommercial

Pelvic fin brownish to blackish, lacking distinct spots.

Cite this page as:
Bray, D.J. 2019, Onigocia grandisquama in Fishes of Australia, accessed 28 May 2024, https://fishesofaustralia.net.au/home/species/2744

Onigocia grandisquama (Regan 1908)

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Torres Strait, NE of Cape York Peninsula, to NE of Bundaberg, Queensland. Elsewhere the species is widespread in the Indo-West Pacific, from the Western Indian Ocean to Australia and the Chesterfield Islands in the Coral Sea.


Dorsal fin I+VII–VIII + 10–11; Anal fin 11–12; Pectoral fin 19–22; Caudal fin (branched rays) 9–10; Pored lateral-line scales 32–39, anterior 2–8 scales each with a spine; Gill rakers 1+4–5=5–6; Lachrymal spines 2–5 (usually 2), tending to increase in number with growth; inner, middle, and outer ridges on lachrymal lacking spines; preocular spines 1–6, tending to increase in number with growth; suborbital spines 14–30, tending to increase in number with growth; pterotic spines 2–11, tending to increase in number with growth; HL 41.6–45.6% SL, single ocular flap present on posterior part of eye, not extending to its posterior margin; small, short papillae absent on posteromedial part of eye; upper iris lappet short and branched; notch absent on suborbital ridge below eye; interopercular flap absent.


Pelvic fin brownish to blackish, lacking distinct spots.


The specific name grandisquamis is  from the Latin grandis (= large) and squama (= scale), presumably in reference to the large scales of this species.. 

Species Citation

Platycephalus grandisquamis Regan 1908,  Transactions of the Linnean Society of London 2nd Series Zoology 12(3): 239. Type locality: Amirante, Seychelles, 30 fathoms.


Bray, D.J. 2019


Atlas of Living Australia

Onigocia grandisquama (Regan 1908)


Imamura, H. 2006. Rediagnosis of the Marbled Flathead, Platycephalus marmoratus (Actinopterygii: Teleostei: Platycephalidae), with comments on the composition of the type series. Species Diversity 11: 295-306 

Imamura, H. 2011. Onigocia sibogae, a replacement name for a distinct species of flathead fish, Platycephalus grandisquamis Weber, 1913 (Teleostei: Platycephalidae). Zootaxa 3066: 52-60

Imamura, H. 2016. Rediagnosis of Onigocia grandisquama (Actinopterygii: Perciformes: Platycephalidae) and Comparison with Congeners. Species Diversity 21(2): 151-159 DOI https://doi.org/10.12782/sd.21.2.151 Open access

Imamura, H. & McGrouther, M.A. 2008. New records of a flathead fish, Onigocia grandisquama (Regan, 1908) (Teleostei: Platycephalidae) from Australia. Memoirs of the Queensland Museum 52(2): 239-243 See ref at BHL

Imamura, H. & Sakashita, M. 1997. Redescription of a rare flathead, Onigocia grandisquama (Regan, 1908) (Scorpaeniformes: Platycephalidae). Ichthyological Research 44(2): 119-124

Knapp, L.W., Imamura, H. & Sakashita, M. 2000. Onigocia bimaculata, a new species of flathead fish (Scorpaeniformes: Platycephalidae) from the Indo-Pacific. Special Publication J.L.B. Smith Institute of Ichthyology 64: 1-10 

Matsubara, K. & Ochiai, A. 1955. A revision of the Japanese fishes of the family Platycephalidae (the flatheads). Memoirs of the College of Agriculture, Kyoto University Fisher. Ser. No. 4 68: 1-110 figs 1-33 pls 1-3

Motomura, H., Matsuura, K. & Khan, M. 2018. Onigocia grandisquama. The IUCN Red List of Threatened Species 2018: e.T114173064A114173276. http://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T114173064A114173276.en. Downloaded on 10 June 2019.

Regan, C.T. 1908. Report on the marine fishes collected by Mr. J. Stanley Gardiner in the Indian Ocean. Transactions of the Linnean Society of London 2nd Series Zoology 12(3): 217-255, pls 23-32

Quick Facts

CAAB Code:37296057

Conservation:IUCN Least Concern

Danger:Venomous spines

Depth:to 64 m


Max Size:6.2 cm SL

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