The clip, shared on Instagram, captured scenes of a drain with numerous koi fish swimming in crystal-clear water.

Anything strike you as special about this fish here? Well ... And just like prized dog breeds, Japanese people take koi breeding very seriously. There are regular competitions to name the top ...

In the tranquil space between Lake Kawaguchiko and Lake Yamanakako in the picturesque Japanese prefecture ... is its eight famous ponds. Home to Japan's emblematic koi fish and many aquatic ...