Achirus mazatlanus (Steindachner, 1869) .

Hairy Sole, Mazatlan Sole, Pacific Lined Sole; Suela Arepita, Suela de Mazatlán, Lenguado Redondo Listado.

Distribution: Global: Eastern Pacific Ocean; from southern Baja California Sur, Mexico, to northern Peru; entering estuaries and littoral lagoons and ascending river courses; Costa Rica: Ni, Ba and Pi (Pacific), 0– 32 m.a.s.l., Per, Dia.

Occurrence and conservation status: Nat, LC.

References: Angulo et al. (2013: 1010; listed, including taxonomic information and distributional data) and Robertson & Allen (2015: 2358; detailed description, including illustrations, information on distribution, with a map, and ecology).