Workers at Quantum Chartered Accountants were finally allowed back into the heavily damaged building, where they found “Shaggy" and “Daphne” still swimming in their 22-gallon tank.
There were six of the fish in the tank before the quake, but one fish died while three others inexplicably vanished.
It’s believed algae that formed in the tank may have provided nutrition to the fish, while also keeping the water relatively clean.
Company director Vicky Thornley took the goldfish home for her young son to care for.
He named them after the Scooby Doo characters Shaggy and Daphne, and they now share a tank with the boy's two other fish, Scooby and Fred.