In case you are wondering, FIFA states that the optimal size of a soccer pitch is between 69,000 and 86,000 square feet. An American football field commonly measures around 57,564 square feet . Of course, if you want an exact measurement conversion for land acreage then this handy conversion tool will help you...
TYPES OF GOLDFISH. There are over 100 types of goldfish! All of the goldfish breeds belong to one of two types. The two types are the ORDINARY goldfish and FANCY goldfish. Ordinary goldfish have only one tail, while fancy goldfish have two tails. The common goldfish is an ordinary goldfish. It has a narrow body, which makes it a fast swimmer.
Goldfish are cold-water fish and can withstand a wide variety of different temperatures, both in aquarium settings and in outdoor ponds. They are compatible with some types of warm-water fish, such as guppies, as long as the aquarist realizes that guppies are much smaller than goldfish and could end up as dinner for the bigger fish.