An Osaka Metropolitan University-led research team that uses ... the team recorded video of wild medaka in their river habitat to observe what goes on overnight, from 9 p.m. to 5 a.m. Using this ...

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As Osaka welcomes the enchanting cherry blossom season, the city transforms into a canvas of pink hues from late March to early April each year. From ancient temples and bustling urban districts to ...

Medaka, small fish used as model organisms in the lab, are naturally found in freshwater streams. News organizations may use or redistribute this image, with proper attribution, as part of news ...