Species that contain: Rivulus and isthmensis [ 3 ] records

flabellicauda, Rivulus Regan [C. T.] 1907:64 [Annals and Magazine of Natural History (Series 7) v. 19 (no. 109) (art. 6); ref. 15174] Juan Veñas, Costa Rica, elevation 1100 meters. Holotype (unique): BMNH 1907.6.28.37. •Synonym of Rivulus isthmensis Garman 1895 -- (Bussing 1980:330 [ref. 8732], Huber 1992:199 [ref. 20639]). •Synonym of Rivulus isthmensis Garman 1895, subspecies isthmensis Garman 1895 -- (Lazara 2001:277 [ref. 25711]). •Synonym of Cynodonichthys isthmensis (Garman 1895). Current status: Synonym of Cynodonichthys isthmensis (Garman 1895). Rivulidae: Rivulinae. Habitat: freshwater.

isthmensis, Rivulus Garman [S.] 1895:140 [Memoirs of the Museum of Comparative Zoology v. 19 (pt 1); ref. 1538] Río San José, Costa Rica. Holotype (unique): MCZ 27475. •Valid as Rivulus isthmensis Garman 1895 -- (Bussing 1980:332 [ref. 8732], Villa 1982:143 [ref. 36708], Bussing 1987:123 [ref. 22927], Huber 1992:265 [ref. 20639], Bussing 1998:176 [ref. 24179]). •Valid as Rivulus isthmensis Garman 1895, subspecies isthmensis Garman 1895 -- (Lazara 2001:277 [ref. 25711], Costa in Reis et al. 2003:537 [ref. 27061], Costa 2006:139 [ref. 28875] in subgenus Cynodonichthys). •Valid as Cynodonichthys isthmensis (Garman 1895) -- (Costa 2011:242 [ref. 31655], Angulo et al. 2013:995 [ref. 33194], Angulo et al. 2023:58 [ref. 40676]). Current status: Valid as Cynodonichthys isthmensis (Garman 1895). Rivulidae: Rivulinae. Distribution: Central America: Costa Rica and Nicaragua. Habitat: freshwater.

rubripunctatus, Rivulus isthmensis Bussing [W. A.] 1980:334, Figs. 1C, 3D, 4D [Brenesia No. 17; ref. 8732] Pond 1/2 kilometer southwest of Puerto Vargas, Punta Cahuita, Limón Province, Costa Rica, elevation 2 meters. Holotype: LACM 38278-1. Paratypes: LACM 38278-2 (20); UCR 212-1 (28), 791-1 (4), 892-1 (147), 892-2 (22), 893-6 (1), 894-1 (1), 896-1 (10), 897-1 (23), 1017-4 (1), 1018-1 (8); USNM 219777 (10). Type catalog: Angulo et al. 2015:373 [ref. 35212]. •Status uncertain -- (Huber 1992:388 [ref. 20639]). •Synonym of Rivulus isthmensis Garman 1895, but a valid subspecies as described -- (Bussing 1998:177 [ref. 24179], Lazara 2001:278 [ref. 25711]). •Valid as Rivulus rubripunctatus Bussing 1980 -- (Berkenkamp & Etzel 1999:64 [ref. 23985], Costa in Reis et al. 2003:539 [ref. 27061], Costa 2006:139 [ref. 28875] in subgenus Cynodonichthys). •Valid as Cynodonichthys rubripunctatus (Bussing 1980) -- (Costa 2011:242 [ref. 31655], Angulo et al. 2013:995 [ref. 33194]). Current status: Valid as Cynodonichthys rubripunctatus (Bussing 1980). Rivulidae: Rivulinae. Distribution: Atlantic river basins, Costa Rica. Habitat: freshwater.