Onigocia sibogae Imamura 2011

Illustration of a syntype of Platycephalus qrandisquamis Weber 1913 (= Onigocia sibogae, presumed paralectotype ZMA 124953). Source: P. 509, Fig. 108, in Weber (1913) Die Fische der Siboga-Expedition / Biodiversity Heritage Library. License: CC by Attribution

A very small flathead with 2– 4 distinct blackish spots on the middle and rear parts of the pelvic fin.

Cite this page as:
Bray, D.J. 2017, Onigocia sibogae in Fishes of Australia, accessed 24 Jan 2020,

Onigocia sibogae Imamura 2011

More Info


West of Holothuria Reefs, off north Western Australia, to north of Curtis Island, Queensland. Elsewhere the species occurs in the tropical, east-Indo-west Pacific (West Papua, Indonesia).


Onigocia sibogae differs other species in the genus in having the following combination of characters: Dorsal fin usually I+VII-11; Anal fin 11; Caudal fin 8; Lateral line scales 30–31, anterior two or three scales with spine; three scales between second dorsal fin and lateral line.
Ocular and interopercular flaps absent, upper iris lappet usually finely crenate; two or three antrorse lachrymal spines, usually no spines on the inner ridge of the lachrymal; 2–5 preocular spines; no notch on the suborbital ridge below the eye; suborbital ridge serrated by 16–26 small spines.


This species had previously been considered to be a synonym of Onigocia oligplepis (Regan, 1908).


The specific name sibogae is based on the vessel "Siboga", used in the Siboga Expedition of 1899-1900, in which the type specimens were collected.

Species Citation

Onigocia sibogae Imamura 2011, Zootaxa 3066: 52-60. Type locality: Ceram Sea, northwest of New Guinea, 1°42.5’S, 130°47.5’E (Replacement name for Platycephalus grandisquamis Weber 1913, preoccupied by Platycephalus grandisquamis Regan 1908)


Bray, D.J. 2017


Australian Faunal Directory

Onigocia sibogae Imamura 2011


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 

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 (in part as Onigocia pedimacula)

Weber, M. 1913. Die Fische der Siboga-Expedition. Siboga-Expéditie Report 57: 1-710 123 figs 12 pls (as Platycephalus grandisquamis)

Quick Facts

Danger:Venomous spines

Depth:9-64 m

Habitat:Reef associated

Max Size:7 cm SL

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