Question

Economic theory suggests fish in the ocean (away from the coastline, not owned or controlled by any government):

should not be considered a “good” since they are not owned by any one individual

will be caught at an efficient rate.

will be caught less rapidly than efficient.

will be caught more rapidly than efficient (more fish will be caught in any one year than is efficient).

Answer 1

First of all, let's define Tragedy of Commons - In a given society when a resource is publicly owned by all the people within the system then each individual will act according to his/her self-interest rather than for the collective good of the society.
An individual will look for maximum profit he can extract from the publicly owned resource.

In this case, the fishes away from the coastline will be a public resource. So every fisherman will look out for maximum profit and hence would catch many fish and random time of the year. This disrupts the fish population and their breeding seasons and thus in long run might cause more harm than good to the society.

Fishes  will be caught more rapidly than efficient