Phallichthys amates (Miller, 1907) .

Merry Widow Livebearer; Olomina, Alumina, Pepesca.

Distribution: Global: Middle America; from eastern Guatemala to western Panama, Atlantic and Pacific drainages; Costa Rica: LN, RF, SJ, SC, Sa, To, Pa, Ma, Si (Atlantic), Te, Be and Ta (Pacific), 0–500 m.a.s.l., Sec, Pot.

Occurrence and conservation status: Nat, LC.

References: Bussing (1966: 237; listed, information on distribution), Bussing (1987: 141; 1998: 213; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology) and Angulo et al. (2013: 996; listed, including taxonomic information and distributional data).