Development of a vehicle for non-invasive oral administration to facilitate behavioral experiments in fish

Matsuo, S.; Yokoyama, T.; Satoh, S.; Yoshio, Y.; Fukuda, K.

doi:10.1101/2025.09.03.673866

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bioRxiv · 10.1101/2025.09.03.673866

Development of a vehicle for non-invasive oral administration to facilitate behavioral experiments in fish

Matsuo, S.·Yokoyama, T.·Satoh, S.·Yoshio, Y.·Fukuda, K.

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Abstract

Pharmacological approaches are increasingly used in diverse fields of fish biology. However, injection-based administration can induce stress or injury, potentially interfering with the natural physiological and behavioral states of the fish. Here, we present a non-invasive vehicle for oral administration of peptide-based compounds. To demonstrate its utility, the oxytocin receptor antagonist atosiban was administered orally using this vehicle. Atosiban was then qualitatively detected in serum by high-performance liquid chromatography. This study provides a proof of concept for an easy-to-use and minimally disruptive tool for various fish experiments.

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Matsuo, S., Yokoyama, T., Satoh, S., Yoshio, Y., Fukuda, K.. 2025-09-08. Development of a vehicle for non-invasive oral administration to facilitate behavioral experiments in fish. https://doi.org/10.1101/2025.09.03.673866

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