The Hoplias australis lives in the benthopelagic, freshwater environment.
Hoplias australis is found throughout the Uruguay River drainage and is named after its southern distribution (Latin australis=southern). More
Hoplias australis can be further distinguished from H. curupira in the number of scales along lateral line (40-45 vs. 34-39 respectively). Description. Morphometric data presented in Table 1. Body cylindrical, deeper than wide. More