hartii, Haplochilus Boulenger [G. A.] 1890:170 [Annals and Magazine of Natural History (Series 6) v. 6 (no. 32) (art. 19); ref. 17026] Trinidad Island, West Indies. Lectotype: BMNH 1890.4.28.11. Paralectotypes: BMNH 1890.4.28.12-16 (5), 1890.6.12.11-18 (8); ?CAS (2, lost in 1906); MNHN 1890-0305 and 0306 (2); CAS-SU 1128 (1). Type catalog: Bertin & Estève 1950:19 [ref. 19576], Böhlke 1953:53 [ref. 12291], Huber 1992 [ref. 20639]. Lectotype selected by Huber 1992:227 [ref. 20639]. •Valid as Rivulus hartii/R. homiae complex -- (Ghedotti & Wiley 2003:1146 [ref. 27019]). •Valid as Rivulus hartii (Boulenger 1890) -- (Huber 1992:227 [ref. 20639], Huber 1999:49 [ref. 23834], Fuller et al. 1999:293 [ref. 25838], Lazara 2001:276 [ref. 25711], Radda 2004:21 [ref. 27638], Nelson et al. 2004:101 [ref. 27807], Costa 2006:139 [ref. 28875] in subgenus Cynodonichthys, Minckley & Marsh 2009:228 [ref. 31114] as harti, Costa & De Luca 2011:356 [ref. 31193], Page et al. 2013:103 [ref. 32708], Vermeulen 2020:45 [ref. 37941]). •Valid as Anablepsoides hartii (Boulenger 1890) -- (Costa 2011:243 [ref. 31655], Phillip et al. 2013:20 [ref. 32896], Valdesalici 2015:241 [ref. 34049], Page et al. 2023:140 [ref. 40505]). Current status: Valid as Anablepsoides hartii (Boulenger 1890). Rivulidae: Rivulinae. Distribution: Caribbean coastal river drainages: Netherland Antilles, Trinidad and Tobago, and Venezuela. Introduced in Mexico. Habitat: freshwater, brackish.