Final answer:
The fish can swim approximately 342 miles per hour.
Step-by-step explanation:
To find the speed of the fish, we multiply the speed of the person by 6, since the fish is said to swim 6 times faster.
So, 57 miles per hour * 6 = 342 miles per hour.
Therefore, the fish can swim approximately 342 miles per hour.
Learn more about Speed of fish compared to a person