tordilho, Lepthoplosternum Reis [R. E.] 1997:321, Fig. 16 [Ichthyological Exploration of Freshwaters v. 7 (no. 4); ref. 22747] Marginal lagoon near sanga do Junco, on dust road between highway BR-116 and Barra do Ribeiro, Rio Grande do Sul State, Brazil. Holotype: MCP 16310. Paratypes: MCP 16308 (3), 16309 (2, c&s); UFRGS 901-02 (1, 2), 966 (2), 4195 (1, c&s). Type catalog: Ferraris 2007:129 [ref. 29155]. •Valid as Lepthoplosternum tordilho Reis 1997 -- (Reis 1998:353 [ref. 23849], Reis in Reis et al. 2003:305 [ref. 27061], Reis & Kaefer 2005:724 [ref. 28481], Ferraris 2007:129 [ref. 29155], Bertaco et al. 2016:416 [ref. 34561], Giora & Wingert 2023:65 [ref. 41026]). Current status: Valid as Lepthoplosternum tordilho Reis 1997. Callichthyidae: Callichthyinae. Distribution: South America: Jacui River drainage (southern Brazil). Habitat: freshwater.