ANIMAL SPECIES:Bighead Gurnard Perch, Neosebastes pandus (Richardson, 1842)
The Bighead Gurnard Perch is a common species found in a variety of habitats, from rocky reefs to deep sponge regions.
Identification
The Bighead Gurnard Perch has a relatively large, rounded head and slender body.
Colouration is variable from whitish to greenish, blueish or brown. Pigmentation pattern on the caudal fin changes with growth. Young individuals have a vertical black band basally and another distally on the caudal fin. Older fish have small black spots scattered on the fin. The Bighead Gurnard Perch is the only species of Neosebastes that shows this distinct change (black bands to black spots) in the caudal fin colour pattern, although the caudal fin colour pattern of N. thetidis also changes with growth (two narrow bands changes to one broad band).
The Bighead Gurnard Perch can be distinguished from other members of the genus by having the following combination of characters: the underside of the mandible has three distinct pores on each side, the lower opercular spine has a spine arising half way along its length, and the third dorsal fin spine is the longest.
Size range
Size 45 cm.Distribution
The species is endemic to Australia. It occurs from South Australia to southern Western Australia.
Distribution by collection data
Biomaps map of Bighead Gurnard Perch specimens in the Australian Museum collection.
Habitat
It inhabits rocky reefs and sandy substrates in shallow (15 m) to deep waters (600 m).
Classification
- Species:
- pandus
- Genus:
- Neosebastes
- Family:
- Neosebastidae
- Order:
- Scorpaeniformes
- Class:
- Actinopterygii
References
- Motomura, H. 2004. Revision of the scorpionfish genus Neosebastes (Scorpaeniformes: Neosebastidae), with descriptions of five new species. Indo-Pacific Fishes. 37: 1-76, pl. 1-2.
- Kuiter, R.H. 1996. Guide to Sea Fishes of Australia. New Holland. Pp. 433.
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A Bighead Gurnard Perch at Noarlunga Tyre Reef View full size
David Muirhead
© David Muirhead
The neotype of the Bighead Gurnard Perch View full size
Barry Hutchins
© Barry Hutchins
Ontogenetic change in caudal fin pigmentation in a Bighead Gurnard Perch View full size
Hiroyuki Motomura
© Hiroyuki Motomura
A line drawing of the Bighead Gurnard Perch View full size
Hiroyuki Motomura
© Hiroyuki Motomura
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