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.
Olympic barbells weigh 44.1 pounds (i.e. 20 kilograms) whereas many standard American bars weigh 45 pounds. The 1-pound difference is not very much, but if you want to know the exact weight of your bar, you will have to weigh it to be sure.