Overfishing can cause the extinction of a fish population, which will also decreases its predators population and increases its pray population - collapsing the environment.
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Answer:
Overfishing can lead to ecosystem collapse as some of the marine animals feed on fishes as source of energy.
The producers and consumers are equally important for the ecosystem. The phytoplankton and blue green algae are producers of the ecosystem and the fishes are consumers of the ecosystem.
Over using any of them can lead to collapse of the ecosystem. Overfishing can lead to starvation of the marine organism that depends on the fishes for their food resulting in disturbance within the ecosystem.
