Achirus mazatlanus (Steindachner 1869) . Hairy Sole, Mazatlan Sole, Pacific Lined Sole; Suela Arepita, Lenguado-Redondo Listado

Vouchers: UCR 0483-003 (2); other collections: KUI 22694 (1), UF 106913 (1) and 106945 (1). Distribution: Eastern Pacific Ocean; from southern Baja California Sur, Mexico, to northern Peru; entering estuaries and littoral lagoons and ascending river courses; (Nicaragua) PN and Ni (Pacific); 0–10 masl; Per, Dia, Amp. Occurrence and conservation status: Nat; LC (2019), population trend unknown. Literature: Villa (1982: 237; detailed description, including illustrations and an identification key, and information on distribution and ecology), Robertson & Allen (2015: 2358; detailed description, including illustrations, and information on distribution, with a map, and ecology) and Angulo (2021: 43; listed, including information on distribution).