Polydactylus approximans (Lay & Bennett 1839) . Blue Bobo; Barbudo Azul, Bobo Blanco, Barbudo de Seis Barbas

Vouchers: (other collections) CAS 51246 (12) and TCWC 44419 (3). Distribution: Eastern Pacific Ocean; from central California, USA, to Chile, including the Cocos, Malpelo and Galapagos islands; entering estuaries and littoral lagoons and ascending river courses; (Nicaragua) ER, PN and Ni (Pacific); 0–8 masl; Per, Dia, Amp. Occurrence and conservation status: Nat; LC (2010), population trend unknown. Literature: Villa (1982: 211; detailed description, including illustrations and an identification key, and information on distribution and ecology), Robertson & Allen (2015: 1402; detailed description, including illustrations, and information on distribution, with a map, and ecology) and Angulo (2021: 42; listed, including information on distribution).