Rocky River is quite diverse with more than 160 aquatic invertebrates
collected from this site between 1994 and 2004. Many invertebrates
collected from this site are typically collected from cool, flowing
streams with some having distributions restricted to Kangaroo
Island and the Fleurieu Peninsula.
Stoneflies are common in cool, flowing streams like Rocky River
and are indicative of good water quality. Four species of stoneflies
have been collected from Rocky River.