The brighter the fish, the bigger the price tag ... And just like prized dog breeds, Japanese people take koi breeding very seriously. There are regular competitions to name the top koi.

This gives them an unusual aesthetic that many fish lovers adore. Newcomers should know that Doitsu is a category of koi, and ...

Koi diplomacy is back with Japanese nishikigoi ... authorities have agreed to resume imports of these vibrantly colored fish, although the reason for the suspension remains unclear.