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.
So the cash prize awarded to athletes are different from country to country and the usual big guns like United States only offer around $25,000 for winning the gold, $15,000 for silver and $10,000 for Bronze while Azerbaijan award $510,000 to the winner of gold, $255,000 for silver and $130,000 for bronze.