rubromarginatus, Trigonectes Costa [W. J. E. M.] 1990:145, Figs. 13-14 [Ichthyological Exploration of Freshwaters v. 1 (no. 2); ref. 14542] Aruana, Goiás, Brazil. Holotype: MZUSP 37194. Paratypes: MNRJ 11311 (3), 11700 (2); MZUSP 35417 (3), 38455 (1, c&s). •Valid as Trigonectes rubromarginatus Costa 1990 -- (Murphy & Collier 1997:797 [ref. 25585], Costa 1998:78 [ref. 23792], Lazara 2001:310 [ref. 25711], Costa et al. 2003:144 [ref. 26946], Costa in Reis et al. 2003:543 [ref. 27061]). Current status: Valid as Trigonectes rubromarginatus Costa 1990. Rivulidae: Rivulinae. Distribution: Araguaia River basin, Brazil. Habitat: freshwater.