The Night of the Zombie Goldfish by Paul Harrison

A boy named Judd Crank loved Chemistry. His latest experiment ended with a thick cloud of purple smoke. He put his experiment in the empty can of fish food. His friend Zak was the trusted one, so he got to take care of Judd's fish while he was out of town. Zak knew the fish were hungry at this time so he fed the fish but uh oh, HE USED JUDD'S EXPERIMENT!They got big and ugly and they started eating the whole town!Zak realized they were zombies!Zak put on a fish food costume and ran around the town to attract the fish. Then Judd made an antidote to make the fish back to normal.