Otolith description

Otolith small, circular-rhomboidal. Dorsal margin raised rounded and crenate to irregular; ventral margin slightly rounded and irregular; posterior margin oblique and crenate/irregular. Distal surface slightly concave; proximal surface slightly convex. Sulcus groove deep, heterosulcoid; opening ostial. Colliculum heteromorph. Crista superior and inferior well developed and ridge-like along entire sulcus, except under ostium where development is poor. Rostrum short and sharply rounded. Excisura moderate; notch shallow; angle acute. Dorsal area largely covered by shallow depression. Ventral area with indistinct groove. Primordium central.

Otolith of Chelidonichthys kumu from a fish of 423 mm FL
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