Though the average specimen in captivity might live 25 or 35 years, an old koi named Hanako, from Mino province in Japan, has been shown to be over 215 years old based on analysis of her scales, and other 100+ year old fish are known from the same pond. Koi, like wild carp, can grow to 36 or more under perfect conditions.
The gold and silver medals weigh 412 grams (0.9 pounds) and the bronze medal weighs 357 grams (0.78 pounds). They are the biggest and heaviest summer Olympic medals ever made.
Hand over the gold: Olympic medal winners taxed up to 39.6 PER CENT on cash bonuses, plus the value of the precious metals around their necks! 1  The U.S. Olympic Committee awards $25,000 for a gold medal, $15,000 for silver and $10,000 for bronze.