I don’t think that there is an ideal “intended” audience for this book.  By appearance, one would think that this is a delightful story about a pet goldfish.  But as the pages turn, we learn that April’s parents “were aquaholics” and that life had no meaning and she “even tried to end things.”  In a children’s book!!!!  I realize that this book was originally published in French and translated; the translation did not work.