When a fish dies why does the other eat it?

Fish eating other fish that have died is a natural part of the ecosystem and is driven by several factors:

* Food Source: Dead fish are a source of nutrition for other fish. This is especially true for scavengers like sharks, catfish, and some types of eels.

* Survival: In the wild, food can be scarce. Dead fish, even if they're already decaying, provide a readily available meal.

* Cleaning Up: Dead fish can attract bacteria and parasites that can harm other fish. By eating dead fish, some species help control these populations and keep their environment healthier.

* Opportunity: In some cases, fish may be opportunistic and simply eat anything they can, including dead fish. This can happen when food is scarce, or the fish is simply hungry.

It's important to note that while eating dead fish is a natural behavior for many fish species, it's not necessarily a pleasant sight for humans. It's a crucial part of the natural balance in aquatic environments.