Species Azygopus pinnifasciatus

Common names: Band-fin flounder (spotted flounder)

Material

Description based on otoliths of one specimen of 110 mm SL. Otolith catalogue reference BG18. Catch locality Maria Island, Tasmania. Depth unknown. ID by BG.

Otolith description

Otolith very small, oval. Dorsal margin and ventral margin rounded, entire. Sulcus groove heterosulcoid; opening ostial. Ostium smaller than cauda. Colliculum heteromorph; anterior colliculum well defined and extends onto rostrum; posterior colliculum poorly developed. Collum absent. Crista superior well defined and ridge-like and split into anterior and posterior sections over the ostium and cauda; crista inferior prominent and ridge-like and extending onto the rostrum. Rostrum elongate and robust, rounded. Antirostrum small and rounded. Excisura present; angle acute, between 60° and 80°. Dorsal area and ventral area depression joined to form shallow horseshoe shape around sulcus, extending from rostrum to anti-rostrum.

Morphometry

SL = 60.764 OL079 mm n = 24; Std Err Est = 0.15; R = 0.663;

Otolith length range = 1.1-2.0 mm (CMAR)

Mass = 5.41 x 10-5 SL2 691 g n = 13; Std Err Est = 0.045; R = 0.997;

Fish length range = 62-110 mm SL (CMAR)

Distribution and ecology

Central New South Wales to Western Australia, and Tasmania; also New Zealand; sand-dwelling deepwater species commonly caught in Great Australian Bight in 110-820 m depth; reaches 200 mm in length (Last et al. 1983, Gomon et al. 1994).

Predator-prey information

None cited.

Otolith of Azygopus pinnifasciatus from a fish of 110 mm SL
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