From beloved author Cynthia Rylant and illustrator Mike Austin comes a colorful and quirky picture book about five fish who find unexpected friendship when some new additions to their tank shake things up!

Henny, Penny, Lenny, Denny and Mike are five fish friends who love everything about life in the fish tank—except for clean-the-tank day and the snail that lives with them, who they mostly ignore. But one day, when they get an enchanting new fairy-tale castle, disaster strikes! And it turns out there’s only one slippery, slimy non-fish fellow who can help…