nanus, Cynolebias Da Cruz [C. A. G.] & Peixoto [O. L.] 1983:90, Figs. 1-3 [Arquivos da Universidade Federal Rural do Rio de Janeiro v. 6 (no. 1); ref. 8235] Between villages of Cava and Tinguá, Nova Iguaçú, 22°38'S, 43°25'W, Rio de Janeiro, Brazil. Holotype: MNRJ 10621. Paratypes: (12) MNRJ uncat. [ex CAGC 114.1/7] (7), uncat. [ex CAGC 115.1/2] (2), MNRJ 10622 (1); MZUSP 25229/30 (2). Original not seen. •Synonym of Leptolebias fluminensis (Faria & Muller 1937) -- (Costa 1995:91 [ref. 22097]). •Synonym of Leptolebias opalescens (Myers 1942) -- (Lazara 2001:194 [ref. 25711], Costa in Reis et al. 2003:531 [ref. 27061], Costa 2008:155 [ref. 29596]). •Synonym of Leptopanchax opalescens (Myers 1942). Current status: Synonym of Leptopanchax opalescens (Myers 1942). Rivulidae: Cynolebiinae. Habitat: freshwater.