Species Pseudolabrus mortonii

Common name: Rosy wrasse

Previous nomenclature: Pseudolabrus psittaculus, Pseudolabrus rubicundus

Material

Description based on otoliths of one specimen of 202 mm FL. Otolith catalogue reference DMF75. Catch locality Disaster Bay, Victoria, 40 m depth. ID by DMF.

Otolith description

Otolith medium, spindle/anvil-shaped. Dorsal margin slightly rounded and entire to broadly crenate; ventral margin flat to slightly rounded and entire to mildly irregular; posterior margin sharply rounded. Distal surface flat; proximal surface flat to slightly convex. Sulcus groove moderate, heterosulcoid to homosul-coid; opening ostial (but Labridae species may progress from ostial to ostio-pseudocaudal to ostio-caudal with growth (Smale et al. 1995). Colliculum heteromorph, but indistinct. Collum absent or low. Crista superior well developed particularly over ostium; crista inferior poorly developed. Rostrum broad and tapering to sharply rounded. Antirostrum small and sharply rounded. Excisura wide; notch moderate; angle acute. Dorsal area depression shallow oval above crista superior. Ventral area depression indistinct.

Morphometry

FL = 133.486 OW 0181 mm n = 12; Std Err Est = 0.054; R = 0.691; P<0.013 Otolith weight range = 9.5-21.4 mg (CMAR)

Mass = 1.075 x 10-5 FL 3 094 g n = 14; Std Err Est = 0.1; R = 0.908; P<0.001; Fish length range = 192-240 mm FL (CMAR)

Distribution and ecology

New South Wales to southern Western Australia, and Tasmania (Last et al. 1983); rocky reefs, from 2 to 220 m depth (Last et al. 1983); juveniles often in caves in shallow waters (Edgar et al. 1982); reaches 450 mm in length (Gomon et al. 1994).

Predator-prey information

None cited.

Otolith of Pseudolabrus mortonii from a fish of 202 mm FL
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