cylindraceus, Rivulus Poey [F.] 1860:308, 383 [Memorias sobre la historia natural de la Isla de Cuba v. 2; ref. 3499] Stream at Mordazo, near Havana, Cuba. Lectotype: MCZ 6423. Paralectotypes: MCZ 6395 (3), 99089 [ex 6423] (2). Type catalog: Howell Rivero 1938:176-177 [ref. 22926] with MCZ 6423 as the holotype, Faloh-Gandarilla et al. 2016:7 [ref. 35177]. No holotype was established; Huber 1992:168 incorrectly designated MCZ 6423 as the holotype; that specimen designated lectotype by Eschmeyer 1998:446. •Valid as Rivulus cylindraceus Poey 1860 -- (Huber 1992:168 [ref. 20639], Lazara 2001:273 [ref. 25711], Costa in Reis et al. 2003:535 [ref. 27061], Costa 2006:139 [ref. 28875], Costa 2011:239 [ref. 31655], Ponce de León et al. 2014:404 [ref. 33593], Rodriguez-Silva 2015:295 [ref. 33779], Faloh-Gandarilla et al. 2016:7 [ref. 35177]). Current status: Valid as Rivulus cylindraceus Poey 1860. Rivulidae: Rivulinae. Distribution: Coastal river basins, Cuba. Habitat: freshwater.