From Zumsteins Picnic Area and Historic Area, follow the MacKenzie River Walk to the falls. The return walk is about 4.6 kilometres and usually takes roughly 1.5 to 2 hours. It is graded as a moderate walk and can include water crossings, rock hopping, scrambling, slippery surfaces, and some steep sections. The route follows the river through eucalypt forest, with tranquil pools, rocky escarpments, and the falls' layered drops along the way.
The falls are also linked to the MacKenzie Falls precinct. That approach includes steep steps and a more strenuous section of river walking, so Zumsteins is the better starting point if Fish Falls is your main goal. Expect a formed bush track rather than a smooth, accessible path right to the water.