This is from a book of poems by Calef Brown which I love called Dutch Sneakers and Flea Keepers). I have pictures in my book to help them learn it, and I’ve added motions, which are too complicated to explain here — ask your child to show you.
Mysterious fish tank,
Mysterious fish
Green like asparagus,
Flat like a dish
Toss in a peppercorn,
Then make a wish
Mysterious fish tank,
Mysterious fish.