I read about This Is a Poem That Heals Fish on Brain Pickings and had to have it for my great nephew. It was difficult to find a copy (but no longer is).
The book has a simple story. Arthur’s fish Leon is bored almost to death. When Arthur asks his mother what to do, she says, “Hurry, give him a poem!”
So, Arthur spends the rest of the book trying to find out what a poem is, getting advice from various people and animals in the neighborhood. For example, Lolo at the bicycle shop says “A poem, Arthur, is when you are in love and have the sky in your mouth.” From everyone’s comments, Arthur makes his own poem at the end of the book.
This is a lovely book, with beautiful, modern illustrations and ideas that make you ponder. Although I am giving it to a four-year-old, I think it could be appreciated by any age.