Sydney Scorpionfish, Scorpaenopsis insperatus Motomura 2004


Holotype of the Sydney Scorpionfish, Scorpaenopsis insperatus. Source: Mark Allen / Australian Museum. License: All rights reserved

Summary:

A rare scorpionfish known only from Sydney Harbour, New South Wales. The Sydney Scorpionfish differs from other species of Scorpaenopsis in having a single spine (vs. two spines) on the upper operculum, and 30-34 scale rows along the body.

Video of the elusive Sydney Scorpionfish, Scorpaenopsis insperatus, under the jetty in Chowder Bay, Sydney Harbour, New South Wales - depth 4 m.


Cite this page as:
Bray, D.J. 2018, Scorpaenopsis insperatus in Fishes of Australia, accessed 19 Jan 2020, http://136.154.202.208/home/species/3669

Sydney Scorpionfish, Scorpaenopsis insperatus Motomura 2004

More Info


Distribution

Known only from Sydney Harbour, New South Wales. Inhabits coarse gravelly sandy areas.

Features

Dorsal fin XII, 9; Anal fin III, 5; Caudal fin 13 (principal rays); Pectoral fin 16; Pelvic fin I, 5; Gill rakers upper limb 3, lower limb (including a raker at angle) 9, rudimentary rakers on ventroanterior lower limb 3. Vertebrae 24;  Longitudinal scale series 30-34; scales above lateral line 4, below 10; scales above lateral line at midbody 5-6; predorsal scale rows 2; Branchiostegal rays 7.

No median interorbital ridge; well-developed interorbital ridges conjoined at anterior edge of occipital pit; upper opercular and posterior lacrimal spines simple, not divided; 30-34 longitudinal scale rows; 3 suborbital spines; fifth dorsal fin spine longest; large orbit diameter (5.4-5.6 in HL); short snout length (3.7-3.9 in HL) less than orbit diameter; narrow interorbital width (5.4-5.6 in HL) less than orbit diameter; narrow space between ventral margin of eye and suborbital ridge.

Similar Species

Differs from other members of the genus Scorpaenopsis in having only a single spine on the upper operculum, and 30-34 scale rows along the body. 

Etymology

The specific name insperatus is derived from Latin meaning ‘‘unexpected,’’ in reference to the unexpected discovery of this new species from Sydney Harbour, a populated harbor adjacent to the Sydney metropolitan area.

Species Citation

Scorpaenopsis insperatus Motomura 2004, Copeia 2004(3): . Type locality: Chowder Bay, Sydney Harbour, New South Wales, depth 14.4 m.

Author

Bray, D.J. 2018

Resources

Australian Faunal Directory

Sydney Scorpionfish, Scorpaenopsis insperatus Motomura 2004

References


Motomura, H. 2004. Scorpaenopsis insperatus: a new species of scorpionfish from Sydney Harbour, New South Wales, Australia (Scorpaeniformes: Scorpaenidae). Copeia 2004(3): 546-550.

Quick Facts


CAAB Code:37287121

Danger:Venomous spines

Depth:4-15 m

Habitat:Reef associated, coarse sand bottom

Max Size:5+ cm SL

Native:Endemic

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Species Maps

CAAB distribution map