As a Collaborative survey project has been started with Water Environment Research Laboratory, Kinki Community Development Center, Water samples will be collected in 7 sites periodically to clarify fish distribution and its temporal change in the focal river system.

• Lake Biwa Day Project 2023 “Lake Biwa Challenge: 100 sites eDNA survey”
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• Echi River collaborative research project with Echi River Fishery Cooperative Association and a citizens’ group working on environmental conservation in the river