Cynoscion sp., probably Cynoscion jamaicensis (Vaillant & Bocourt 1883)

Extant specimens: MCUC ZOO.0000023 (Fig. 58).

Classification on the specimen: None.

Common names on the specimen (Portuguese/Tupi): None.

Comments: Two species of the genus Cynoscion with truncate caudal fin and ctenoid scales occur in the southwestern Atlantic, C. guatucupa and C. jamaicensis (Menezes & Figueiredo 1980; Chao 2002). Cynoscion jamaicensis can be distinguished from C. guatucupa by a higher number of dorsal-fin rays (22–27 in C. jamaicensis vs. 18–21 in C. guatucupa) and by a higher number of scales above lateral line (68–73 in C. jamaicensis vs. 63–66 in C. guatucupa) (Menezes & Figueiredo 1980; Chao 2002). The specimen analyzed has more than 23 dorsal-fin rays, however, due to its poor conditions, it is not possible to count the scales, hindering a proper identification of this specimen.