In freshwater ecosystems, fish are the best-known group of aquatic vertebrates, existing at or near the top of the food chain. They are highly sensitive to environmental changes, and the presence of specialised species like snow trout indicates a healthy ecosystem. Climate change poses a growing concern due to its unprecedented impact on life, with mountain streams and rivers being particularly vulnerable. A deeper understanding is needed to use these ecosystems as indicators of change. Traditionally, hydro-geomorphological data have been used to study stream and river ecology, often overlooking underwater acoustics primarily generated by water velocity, volume, and substrate. This study compared stream acoustics with habitat types to understand their relationship. Acoustic data from a hydrophone and a high-sampling-rate recorder were combined with hydro-geomorphological data. Analysis revealed that pool and run habitats were distinct from other habitats and each other across all frequency ranges. Pools exhibited the lowest sound pressure levels (SPLs) compared to other habitats, making them the quietest. Understanding the acoustic dimension of stream and river ecosystems is crucial for comprehensive knowledge. However, comparing acoustic data with snow trout abundance was not significant due to the differing scales of data collection (macro-habitat level for acoustics and a larger scale for fish abundance).