Which One is Whitney?

All of the bulbous, flesh-colored siblings in the Dugong fish family look exactly the same. But each (save one) has a distinguishing personality trait: Warren is cheerful, Winnie is polite, Wally is friendly and Wendy is funny. But Whitney, according to their mother, is none of the above. She has a hard time coming up with just the right word to describe him, until a series of encounters between Whitney and Mrs. Grouper, another resident of the deep, leads Mrs. Dugong to conclude that he might be her most clever child. This engaging story is the first of three featuring the likable Dugongs; all allow Whitney to demonstrate just how cunning he can be. With his soft watercolors, playful language and unexpected twists, Stevenson's fish tales will amuse grown-ups as well as children. Ages 5-up. (Aug.)