Why should rainbow fish give her scales away? I think Rainbow fish made a good choice to give away her scales.
Firstly, because he is lonely and has no one to play with, and if he gives them one he will not be lonely and has someone to play with.
Secondly, he should do something that makes him happy and feel good about himself.
Lastly because he felt happier when he gave away his scales, but before he felt really upset that he has lost his friends.
I really enjoyed reading this book. Also this book actually taught me something, it doesn't matter what's on the outside what matters is what's on the inside. Also to think about other people