Otolith description

Otolith very small, triangular/hour-glass shaped. Dorsal margin domed, rounded and entire; ventral margin notched and irregular. Distal surface flat; proximal surface irregular. Sulcus groove deep, heterosulcoid; opening ostio-caudal. Colliculum heteromorph; single raised anterior colliculum. Collum absent. Crista superior well developed; crista inferior very well developed. Rostrum large, broad and rounded (Smale et al. 1995). Excisura moderate; notch shallow; angle wide. Dorsal area depression above crista. Ventral area depression absent.

Otolith of Macrorhamphosus scolopax from a fish of 155 mm TL
0 0

Post a comment