One fish two fish red fish blue fish

One Fish, Two Fish, Red Fish, Blue Fish (1960) by Dr. Seuss is a classic Beginner Book that uses simple, rhythmic, and nonsensical verse to teach colors, numbers, and opposites. It follows a boy and girl who encounter a variety of imaginative creatures, such as the Yink, Wump, and Zans, in a freewheeling,, vignette-style plot.