Author’s note: Back in 2015 I wrote a series of walkarounds depicting and describing the breadth of the Yujin Freshwater Series, AKA Yujin Primary Freshwater Fish Pictorial Book. At that time, each species was described in brief, each figure was described in brief, and a number of photos were included. Some were updated with variants as I found them in my hunts—or updated when I learned more about them!