Article History
Received: 7 October 2023
Revised: 4 January 2024
Accepted: 4 January 2024
First Online: 23 February 2024
Declarations
:
: The authors declares that they have no conflicts of interest.
: Fish species treated in the present study are listed as “Endangered” (EN) on Red List of the Ministry of the Environment of Japan, so we collected them from privately owned ponds where healthy breeding is guaranteed, and the number of individuals to be fixed was kept to the minimum necessary. As the trappings of fishes were conducted following domestic laws, no approval by an ethics committee was required.