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...
The comet goldfish is similar to the common goldfish types and is often mistaken for it, but the comet has a more slender body with more noticeable and elongated fins; especially the caudual fin, which is more than half to three-quater the size of its own body.
As there are over a hundred varieties of goldfish, coloration and physical characteristics vary greatly. The common goldfish has two sets of paired fins-the pectoral fins and pelvic fins, and three single fins-the dorsal, caudal, and anal fin. The head lacks scales. Goldfish have very large eyes and acute senses of smell and hearing.