glaucus, Rivulus Bussing [W. A.] 1980:342, Figs. 2D, 5D, 6D [Brenesia No. 17; ref. 8732] Tributary of Río Pedregoso at southern edge of San Isidro de El General, San José Province, Costa Rica, elevation 680 meters. Holotype: LACM 38277-1. Paratypes: LACM 38277-2 (5); UCR 42-7 (4), 300-3 (5), 519-7 (2), 592-1 (10), 750-2 (2), 1198-1 (6). Type catalog: Angulo et al. 2015:372 [ref. 35212]. •Valid as Rivulus glaucus Bussing 1980 -- (Bussing 1987:120 [ref. 22927], Huber 1992:215 [ref. 20639], Bussing 1998:173 [ref. 24179], Lazara 2001:275 [ref. 25711], Costa in Reis et al. 2003:536 [ref. 27061], Costa 2006:139 [ref. 28875] in subgenus Cynodonichthys). •Valid as Cynodonichthys glaucus (Bussing 1980) -- (Costa 2011:242 [ref. 31655], Angulo et al. 2013:995 [ref. 33194], Angulo et al. 2020:6 [ref. 37425]). Current status: Valid as Cynodonichthys glaucus (Bussing 1980). Rivulidae: Rivulinae. Distribution: Central America: Pacific slope of Costa Rica. Habitat: freshwater.