Sicydium cocoense (Heller & Snodgrass, 1903) .

Cocos River Goby; Chupapiedras, Tití, Gobio, Gobio de Río de la Isla del Coco, Lamearenas.

Distribution: Global: Eastern Pacific Ocean; Cocos Island; entering estuaries and ascending river courses; Costa Rica: IC (Pacific), 0– 62 m.a.s.l., Per, Dia (Cat).

Occurrence and conservation status: End, DD.

References: Angulo et al. (2013: 1009, as Sicydium cocoensis —misspelling; listed, including taxonomic information and distributional data).