What makes a fish a fish? Trout thinks he knows the answer. ''That's easy! Fish have fins, gills, scales, are shaped like me, and live underwater.'' ''Not so fast,'' answers Mudskipper. ''What about a clingfish? They don't have any scales. Or a hagfish? They don't have any fins. Or what about me? I live in and out of the water!''

As Trout and Mudskipper explore below and above the world's waters, they are introduced to a multitude of fish in various shapes, colors, and sizes, forcing Trout to rethink his notion of what a fish is. Maybe there is a vast watery world of unimagined possibilities (like a walking fish, or a fish with a transparent head!). And maybe, just maybe, there's not just one way to be a fish but many, many ways!

• Ages 3 to 8.
• Full color picture book.
• Hardcover with dust jacket.
• 8-3/4'' wide x 11-1/4'' high.
• 36 pages.

Author/illustrator David Opie holds a BFA and MFA in illustration and lives with his wife in Connecticut.

Reviews: 

BOOKLIST, STARRED REVIEW  
''Informative and eye-catching picture book.'' 

KIRKUS, STARRED REVIEW  
''A broad and engaging introduction to the largest vertebrate group.''

Click here to download a free Common Core Aligned Teaching Guide for All the Fish in the World

Book Trailer: