Otolith description

Otolith medium, elongate, anvil-shaped. Dorsal margin lobed; ventral margin entire, posterior margin lobed and notched. Sulcus groove heterosulcoid; opening ostial. Colliculum heteromorph; anterior colliculum absent; posterior colliculum indistinct. Collum broad. Crista superior and crista inferior distinct and rounded. Rostrum elongate, 30% of otolith length, slender and pointed. Antirostrum moderate and slender, half size of rostrum and rounded. Excisura deep with parallel upper and lower sides; angle acute. Dorsal area groove present.

Otolith of Aplodactylus arctidens from a fish of 295 mm SL
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