Passive acoustic monitoring of sound characteristics and vocalisation patterns of Brown croaker

Passive acoustic monitoring (PAM) is an observation method for detecting and characterising ocean soundscapes, and it has recently been used to observe underwater marine life. The brown croaker (Miichthys miiuy) is an important fish species in the Northwest Pacific Ocean that produces biological sounds. In this study, the sounds of 150 adult brown croakers were recorded continuously for 3 weeks using a self-recording hydrophone. The acoustic parameters of their calls, choruses, and vocalisation patterns were analysed using environmental factors from the ocean. The brown croaker`s call sound with zero peak sound pressure level was 150.8 dB, but the chorus sound was relatively high at 161.3 dB. The vocalisation of the sounds occurred daily around sunset and dusk and was associated with decreased spawning activity when the water temperature decreased below approximately 25 °C. The acoustic characteristics of the brown croaker`s sounds will help improve ocean soundscape management to protec..., , # Passive acoustic monitoring of sound characteristics and vocalisation patterns of Brown croaker Dataset DOI: 10.5061/dryad.kkwh70sgc ## Description of the data and file structure We deployed an underwater self-recording hydrophone (SM3M, Wildlife Acoustics, Inc., USA) to continuously record acoustic data for 13 consecutive days (from September 18 to 30, 2023). A single hydrophone was used throughout the study. The hydrophones receiving voltage sensitivity (RVS) was set to 164.6 dB V/Pa, with a gain of 0 dB and a sampling frequency of 48 kHz. Brown croaker sounds were stored as digital files every 10 minutes. The Brown croaker`s sounds were stored as digital files and were configured to record data for 9 minutes 56 seconds every 10-minute intervals, resulting in a duty cycle of 99%. ## Files and variables ### File: Brown croaker sound data.zip **Description:** The attached *.zip file contains the Brown croaker`s data in the paper, along with the source code for analyzing and plo..., ,