n = 18
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Hoplias aimara | (Valenciennes, 1847) | Hoplias aimara | Erythrinidae | |
| Hoplias argentinensis | Rosso, González-Castro, Bogan, Cardoso, Mabragaña, Delpiani et al., 2018 | Genus Species | New species | |
| Hoplias australis | Oyakawa & Mattox, 2009 | Hoplias australis | Erythrinidae | |
| Hoplias brasiliensis | (Spix & Agassiz, 1829) | Hoplias brasiliensis | Erythrinidae | |
| Hoplias curupira | Oyakawa & Mattox, 2009 | Hoplias curupira | Erythrinidae | Black wolf-fish |
| Hoplias intermedius | (Günther, 1864) | Hoplias intermedius | Erythrinidae | |
| Hoplias lacerdae | Miranda Ribeiro, 1908 | Hoplias lacerdae | Erythrinidae | |
| Hoplias macrophthalmus | (Pellegrin, 1907) | Hoplias macrophthalmus | Erythrinidae | Giant trahira |
| Hoplias malabarica | (Bloch, 1794) | Hoplias malabaricus | Erythrinidae | Trahira |
| Hoplias malabaricus | (Bloch, 1794) | Hoplias malabaricus | Erythrinidae | Trahira |
| Hoplias malabaricus lacerdae | Miranda Ribeiro, 1908 | Hoplias lacerdae | Erythrinidae | |
| Hoplias malabaricus microphthalmus | Pellegrin, 1910 | Hoplias macrophthalmus | Erythrinidae | Giant trahira |
| Hoplias mbigua | Azpelicueta, Benítez, Aichino & Mendez, 2015 | Hoplias mbigua | Erythrinidae | |
| Hoplias microcephalus | (Agassiz, 1829) | Hoplias microcephalus | Erythrinidae | |
| Hoplias microlepis | (Günther, 1864) | Hoplias microlepis | Erythrinidae | |
| Hoplias misionera | Rosso, Mabragaña, González-Castro, Delpiani, Avigliano, Schenone et al., 2016 | Genus Species | New species | |
| Hoplias patana | (Valenciennes, 1847) | Hoplias patana | Erythrinidae | |
| Hoplias teres | (Valenciennes, 1847) | Hoplias teres | Erythrinidae |