The Carp in the Bathtub by Barbara Cohen - All Ages
This book by Barbara Cohen from 1972 is considered a modern classic. Set in Brooklyn, Harry and Leah get excited about the approaching Jewish holiday and eating Mama's gefilte fish, which she always makes from fresh carp. To ensure she always has the best and freshest, Mama stores her fish in, you guessed it, the bathtub. When Harry and Leah grow attached to the carp, the mischief begins. Softcover, 1987. All ages.