‘scale’ is an interspecies art project: an audience-interactive installation that involves nocturnal electric fish from the Amazon River Basin. Twelve different species of these fish comprise a choir whose sonified electrical fields provide the source tones for an immersive audiovisual environment. The fish are housed in individual tanks configured in a custom-built sculptural arc of aluminum frames placed around a central podium. The electrical field from each fish is translated into sound, and is thus heard — unprocessed or with digital effects added, with immediate control over volume via a touchscreen panel — through a 12-channel surround sound system, and with LED arrays under each tank for visual feedback. All software is custom-designed. Audience members interact as deejays with the system. Amongst the goals of the project is our desire to foster wider public awareness of these remarkable creatures, their importance to the field of neurological research, and the fragility of their native ecosystem.The project leaders comprise visual/conceptual artist Marlena Novak, composer/sound designer Jay Alan Yim, and neural engineer Malcolm MacIver. MacIver’s research focuses on sensory processing and locomotion in electric fish and translating this research into bio-inspired technologies for sensing and underwater propulsion through advanced fish robots. Novak and Yim, collaborating as ‘localStyle’, make intermedia works that explore perceptual themes, addressing both physical and psychological thresholds in the context of behavior, society/politics, and aesthetics.