The story of a small fish named Swimmy who lives in the depths of the ocean, finds courage, and leads his friends to face a big fish—this is the heartwarming tale woven by Leo Lionni in his picture book “Swimmy.” In this post, we’ll introduce you to Swimmy—what kind of book it is, its release date, target age, awards, and why it has remained a long-time favorite. The tone is gentle and easy to read, perfect for sharing with families and early-reading children.
1. Book Basic Information
- Title (Japanese): 「スイミー ちいさなかしこいさかなのはなし」 (Swimmy: A Tale of a Small, Clever Fish)
- Original Title: Swimmy
- Author & Illustrator: Leo Lionni
- Translator (Japanese edition): Shuntaro Tanikawa
- Publisher (Japanese edition): Kogakusha
- Japanese Release Date: April 1, 1969 (32 pages, hardcover)
- Original First Edition: United States, 1963 (Pantheon, hardcover)
- List Price (at release): ¥1,650 (including tax)
- ISBN (Japanese edition): 978-4-7690-2001-1

2. Target Age & Key Features
Recommended Age: Around 4 to 8 years old. In Japan, it’s often described as suitable for children 3 years and older, but even younger preschoolers are captivated by the vivid collage illustrations and the simple yet memorable story. Adults, too, will appreciate Lionni’s art and the message beneath the text.
Why It’s Special:
- Beautiful Collage Art: Leo Lionni’s signature collage technique brings the ocean to life. From the transparent bodies of jellyfish to the shifting seaweed, every page feels as if you’re diving into a real underwater world.
- Simple but Powerful Message: Swimmy is “different” because he’s black when all the other tiny fish are red. Through his journey, children learn about embracing individuality and the importance of working together.
- Textbook Inclusion: Since 1977, a portion of Swimmy has been included in Japanese second-grade elementary school language textbooks. Many parents remember reading it in school, and now share the story with their own children—creating a true generational legacy.
3. Story Overview
1. Beginning—Swimmy, All Alone
Deep in the ocean, a small red fish lives happily with his brothers and sisters. That fish’s name is Swimmy—but one day, a big tuna appears and eats all of Swimmy’s family, leaving him alone and frightened. Swimmy hides beneath a rock and feels the weight of his loss. Yet, even in his sadness, he decides to keep swimming, determined to find a new home and purpose.
2. The Journey—A Colorful Underwater World
As Swimmy journeys deeper, he discovers the wonders of the sea: glowing jellyfish, crab-like creatures scuttling across the ocean floor, and swaying sea anemones that look like palm trees. Through these encounters, Swimmy’s heart begins to warm, and he remembers the joy of exploring—hope shines again in his eyes.
3. Reunion—Finding New Friends
At last, Swimmy spots a school of little red fish—just like him. But these fish are hiding in a cave, too scared to swim outside because a giant fish threatens them. Swimmy tells them, “We can’t stay hidden forever. Let’s think together. If we act wisely, we can be safe.” The young fish listen, inspired by Swimmy’s courage and cleverness.
4. Cooperation & Ingenuity—Becoming One Big Fish
Under Swimmy’s guidance, the little red fish practice and practice until they swim in a perfect V-shape with Swimmy at the tip. Together, they appear as one enormous fish with a single, watchful eye—Swimmy’s eye—leading the way. When the real big fish see this “huge fish,” they flee in panic, and the tiny red fish reclaim their freedom to swim together in open water. This lesson in teamwork and creative problem-solving becomes their greatest victory.
4. Awards & Achievements
- 1964 Caldecott Honor (U.S.): A prestigious recognition in American children’s literature that honors excellence in illustration.
- 1965 German Children’s Book Award (Picture Book Category): Celebrated for its universal appeal and artistic quality.
- Textbook Adoption (Japan): Since 1977, an excerpt of Swimmy has been used in second-grade Japanese language textbooks, introducing millions of students to its lessons.
These accolades underscore how Swimmy has resonated across cultures and generations.

5. Sales & Why It’s a Long-Seller
Since the Japanese edition’s first publication in 1969, Swimmy has been reprinted repeatedly and remains a best-seller in children’s picture book sections. While exact numbers aren’t officially disclosed, Swimmy is often mentioned alongside million-copy sellers—a testament to its enduring appeal.
Reasons for Its Ongoing Popularity:
- Textbook Legacy: Generations of Japanese children read it at school, and parents pass it on to their own kids, creating a bond that transcends decades.
- Timeless Themes: Courage, cooperation, and celebrating uniqueness are values that never go out of style. Families revisit the story year after year, finding new meaning each time.
- Striking Visuals: Lionni’s collage technique and bold colors remain as fresh today as they were in 1963. Each page is a work of art that captivates both children and adults.
6. Why Families Still Love It
Shared Experience: Young readers are enchanted by the story, while parents often recall their own childhood memories of Swimmy. Reading together sparks conversations about bravery, creativity, and compassion—making it a true family experience.
Educational Value: Teachers and librarians use Swimmy not only for reading aloud but also as a springboard for art projects, science lessons about ocean life, and drama activities—encouraging children to think and express themselves creatively.
Merchandise & Community: Over the years, you’ll find Swimmy T-shirts, plush toys, coloring books, and even play scripts. Workshops and reading events keep the community engaged, ensuring the story stays alive in hearts and minds.
7. Conclusion
Leo Lionni’s Swimmy is a timeless picture book that has touched hearts for over 60 years. With its Caldecott Honor, international awards, and years of textbook inclusion in Japan, Swimmy teaches children about individuality, teamwork, and courage. Through the stunning collage art and a straightforward yet profound narrative, readers of all ages discover that by working together, even the smallest voice can make a big difference.
Whether you are a parent, educator, or simply a lover of beautiful stories, Swimmy deserves a spot on your bookshelf. Dive into this underwater adventure with your child and experience the magic of Leo Lionni’s masterpiece—one page at a time.
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