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Overfishing is the name for catching too much fish. It occurs in a body of water, more fish are caught that either grow back or migrate to the body of water. It is a good example for a social dilemma in the context of the Tragedy of the commons.
Overfishing can be categorized into different types:
- Growth overfishing: The fish that are caught are smaller than those that would produce the maximum sustainable yield
- Recruitment overfishing: So much fish is caught that the there are too few adults of a certain species left, so that they can keep the level of fish at its current number.
- Ecosystem overfishing: The balance in the ecosystem shifts: Too few of the large predators are left, so smaller species take their place.