A standing wave tube-like setup designed for tomographic imaging of the sound-induced motion patterns in fish hearing structures

We are able to visualise the motion of the peripheral auditory structures from the swim bladder to the Weberian ossicles and the otoliths (sagittae) in terms of maximum and minimum (sound-induced particle motion) sound pressure, respectively. This methodology has been successfully applied to various otophysan fish species and is demonstrated in the example of a glass catfish (Kryptopterus vitreolus). Our setup not only enhances our understanding of basic principles in fish bioacoustics but also sets a new standard for non-invasive, high-resolution imaging techniques in the field of aquatic sensory biology.