According to data put together by Harvard's Amitabh Chandra, which the New York Times published in raw form in 2006, it was the least common birth date for more than two decades in the late 20th century; September 16 comes in at the other end of the spectrum, as the most common date for babies to be born.
A Goldfish will grow quicker if you increase its metabolism slightly. This can be done by keeping the water at summer temperatures of around 65F to 70F. Goldfish kept at this higher temp will also need added space (2 gals per inch of fish), air bubbles and a really good filtration system.
This completely depends on the species of fish. Goldfish will live 20-30 years and grow to be a foot long, if you let them. Most die within a few years because people don't look after them well. Fish need bigger tanks as they grow; it is a common misconception that fish only grow to the size of their container.