Lewis & Short

ăcĭpenser, ĕris, and ăcĭpensis, is (also aquip., not accipenser), m., = ἀκκῐπησίος, a fish very highly esteemed in the age of the greatest luxury of the Romans, perh. the sturgeon, Cic. Tusc. 3, 18; id. Fin. 2, 8; Hor. S. 2, 2, 47; Ov. Hal. 132.