jucundus, Rivulus Huber [J. H.] 1992:273, Pl. 37 (figs. b-c) [Review of Rivulus: Ecobiogeography -- Relationships; ref. 20639] Río Pastaza, near Puyo, Pastaza dept., Ecuador, elevation 900-1000 meters. Holotype: MHNG 2532.90. Paratypes: UMMZ 203874 (3). •Valid as Rivulus jucundus Huber 1992 -- (Lazara 2001:278 [ref. 25711], Costa in Reis et al. 2003:537 [ref. 27061], Costa 2006:139 [ref. 28875] in subgenus Cynodonichthys, Barriga Salazar 2014:117 [ref. 35745]). •Valid as Anablepsoides jucundus (Huber 1992) -- (Costa 2011:243 [ref. 31655]). Current status: Valid as Anablepsoides jucundus (Huber 1992). Rivulidae: Rivulinae. Distribution: Amazon River basin, Ecuador. Habitat: freshwater.