Drainage Canal In Japan Is So Clean They Yven Have Koi In It

This drainage canal in Japan is a living proof that not all canals are dirty, some can even be a habitat for animals.

Netizens have gone crazy about drainage canals in Japan that are so clean, Koi Fish live in them. These schools of fish living in what supposed to be a storage of waste water amazed everyone and became an instant trending topic. After the post went viral, the canals became a tourist spot for the locals and even to some foreigners.

h/t: reddit