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 18 Mar 2018, http://fishesofaustralia.net.au/Home/species/5390

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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