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Volume 11
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10.3390/fishes11060355
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Article

Acoustic Features of Rainbow Trout (Oncorhynchus mykiss) Ingesting Pelletized Feed

by
Pengxiang Xu
†,
Yan Wang
†,
Hongyang Chen
,
Shuang Song
,
Hexiang Yang
,
Qingxia Li
,
Leiming Yin
* and
Binbin Xing
*
College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
*
Authors to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Fishes 2026, 11(6), 355; https://doi.org/10.3390/fishes11060355
Submission received: 30 April 2026 / Revised: 3 June 2026 / Accepted: 11 June 2026 / Published: 15 June 2026
(This article belongs to the Special Issue Technology for Fish and Fishery Monitoring—2nd Edition)
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Abstract

In this study, passive acoustic technology was used to obtain sound signals indicative of feeding in individual rainbow trout (Oncorhynchus mykiss). Feeding signals were separated from background signals to characterize their acoustic parameters, in order to quantify feeding activity. The audio and video data of rainbow trout during feeding were synchronized to determine the signal category and mark it, and the time-domain features and frequency-domain features of fish swallowing feed were extracted. This not only has important theoretical value for in-depth understanding of fish growth, reproduction, and other life activities, but also provides data support and technical recommendations for future research on this topic.
Keywords: rainbow trout; feeding behavior; passive acoustic technology; quantitative research rainbow trout; feeding behavior; passive acoustic technology; quantitative research

Share and Cite

MDPI and ACS Style

Xu, P.; Wang, Y.; Chen, H.; Song, S.; Yang, H.; Li, Q.; Yin, L.; Xing, B. Acoustic Features of Rainbow Trout (Oncorhynchus mykiss) Ingesting Pelletized Feed. Fishes 2026, 11, 355. https://doi.org/10.3390/fishes11060355

AMA Style

Xu P, Wang Y, Chen H, Song S, Yang H, Li Q, Yin L, Xing B. Acoustic Features of Rainbow Trout (Oncorhynchus mykiss) Ingesting Pelletized Feed. Fishes. 2026; 11(6):355. https://doi.org/10.3390/fishes11060355

Chicago/Turabian Style

Xu, Pengxiang, Yan Wang, Hongyang Chen, Shuang Song, Hexiang Yang, Qingxia Li, Leiming Yin, and Binbin Xing. 2026. "Acoustic Features of Rainbow Trout (Oncorhynchus mykiss) Ingesting Pelletized Feed" Fishes 11, no. 6: 355. https://doi.org/10.3390/fishes11060355

APA Style

Xu, P., Wang, Y., Chen, H., Song, S., Yang, H., Li, Q., Yin, L., & Xing, B. (2026). Acoustic Features of Rainbow Trout (Oncorhynchus mykiss) Ingesting Pelletized Feed. Fishes, 11(6), 355. https://doi.org/10.3390/fishes11060355

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