title: Alosa agone
abstract: Alosa agone Common name. Twaite shad. Diagnosis. Distinguished from other species of Alosa entering freshwater in Black Sea and Mediterranean basins by: ○ 28–50 gill rakers, rarely up to 60 / ○ length of gill rakers equal to length of branchial filaments in individuals longer than 220 mm SL / ○ no teeth on palatine / ○ dorsal profile curved / ○ usually a series of 4–8 black blotches behind gill opening (sometimes a single blotch). Size up to 500 mm SL. Distribution. Mediterranean basin and rarel
journal: Zenodo (CERN European Organization for Nuclear Research)