Author: Bonaparte, 1830
Acipenser naccarii Bonaparte, 1830
Status in World Register of Marine Species:
Accepted name: Acipenser naccarii Bonaparte, 1836 (updated 2009-06-25)
Diagnosis: snout moderate, less than 60% of head, very broad and rounded at tip. Lower lip not continuous, interrupted at centre; barbels not fringed, nearer to tip of snout than to mouth and not touching it. Dorsal finrays 36-48; anal finrays 24-31. Five rows of scutes, dorsal 10-14 (the middle ones deeper and usually larger than those at front), lateral 32-42 on each side, ventral 8-11 on each side, with no smaller plates between dorsal and lateral rows. Colour: back olivaceous brown, flanks lighter, belly white. Size: to 150 cm and 20-25 kg.
Habitat: on bottom over sand and mud at 10-40 m. Food: bottom-living invertebrates of sand and mud, also small fishes. Reproduction: enters rivers from March to May and presumably spawns then.
Distribution: Adriatic, entering the Po and Adige rivers; very rare and probably verging on extinction (Bini, 1970).
Eggs, larvae and young stages. No data.
Otoliths (sagitta). No data.