Animal Species:Thetis Fish, Neosebastes thetidis (Waite, 1899)

The Thetis Fishis yellowish, usually with five large poorly-defined blackish blotches. Pigmentation pattern on the caudal fin changes with growth. The species is endemic to southern New South Wales to southern Western Australia, including Tasmania.

Thetis Fish, Neosebastes thetidis

CSIRO Marine Research © CSIRO Marine Research

Standard Common Name

Thetis Fish

Alternative Name/s

Coral Perch, Ocean Perch, Rough Gurnard Perch

Identification

The Thetis Fish has a relatively short snout and deep body. The body is yellowish, usually with five large poorly-defined blackish blotches. Pigmentation pattern on the caudal fin changes with growth. The caudal fins of young individuals have two narrow vertical black bands distally. Older fish have a single broad vertical band on the fin. The suborbital scales of this species extend onto the lower margin of the eye membrane. This character is not found in any other species of Neosebastes.

The species was described by Australian Museum Fish Curator, Edgar Ravenswood Waite in 1899.

Size range

The species grows to 32 cm.

Distribution

The Thetis Fish is relatively common. It has the largest distributional range of any Neosebastes species. The species is endemic to southern New South Wales to southern Western Australia, including Tasmania.

The map below shows the Australian distribution of the species based on public sightings and specimens in Australian Museums.  Source: Atlas of Living Australia.

Neosebastes thetidis

Distribution by collection data

Ozcam map of Thetis Fish in the Australian Museums.

What does this mean?

Habitat

The Thetis Fish is usually found at depths of 80 m - 280 m.

Classification

Species:
thetidis
Genus:
Neosebastes
Family:
Neosebastidae
Order:
Scorpaeniformes
Class:
Actinopterygii
Subphylum:
Vertebrata
Phylum:
Chordata
Kingdom:
Animalia

What does this mean?

References

  1. Hoese, D.F., Bray, D.J., Paxton, J.R. & G.R. Allen. 2006. Fishes. In Beesley, P.L. & A. Wells. (eds) Zoological Catalogue of Australia. Volume 35. ABRS & CSIRO Publishing: Australia. parts 1-3, pages 1-2178.
  2. 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.


Mark McGrouther , Collection Manager, Ichthyology
Last Updated:

Tags Fishes, Ichthyology, Thetis Fish, Neosebastes thetidis, Neosebastidae, yellow, black, red, 'normal fish', 30 cm - 1m, blotches, pelagic, marine, adult, transparent fin,