Species Kathetostoma canaster

Common name: Speckled stargazer

Previous nomenclature: Kathetostoma sp.1 in Last et al. 1983


Description based on otoliths of four specimens. Specimens 1-3 of 150-360 mm TL. Otolith catalogue reference 30.92P1-3. Catch locality Stanley, Bass Strait, Tasmania. ID by RG. Specimen 4 of 533 mm TL. Otolith catalogue reference DMF8-9. Catch locality Point Hicks, Victoria, 200 m depth. ID by DMF.

Otolith description

Otolith large, oval to ovate. Dorsal margin slightly rounded, irregular to crenate; ventral margin rounded and irregular; posterior margin blunt and irregular. Distal surface flat; proximal surface flat to mildly concave. Sulcus groove near homosulcoid; opening ostial. Cauda with slight ventral curve at posterior end. Colliculum heteromorph. Collum absent or indistinct. Crista superior over cauda only, gently rounded and indistinct to raised and irregular; crista inferior more developed and irregular, as an enfolding ridge. Rostrum short and rounded. Antirostrum small and rounded. Excisura absent, but shallow notch present with acute angle. Primordium central.


TL = 138.517 OW 0289 mm n = 8; Std Err Est = 0.058; R = 0.655; P<0.078 Otolith weight range = 79.0-124.0 mg (CMAR)

Mass = 2.922 x 10-6 TL 3323 g n = 27; Std Err Est = 0.522; R = 0.893; P<0.001; Fish length range = 150-580 mm TL (CMAR)

Distribution and ecology

New South Wales to southern Western Australia, and Tasmania; in 30-700 m depth; reaches 650 mm in length (Gomon et al. 1994, May and Maxwell 1986).

Predator-prey information

Undistinguished species of this Family are known prey of Australian fur seal (Arctocephalus pusillus doriferus) (Hume et al. 2004).

Otolith of Kathetostoma canaster from a fish of 533 mm TL
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