What is what eats a fish?

There are a wide variety of animals that eat fish as part of their diet. Some common predators of fish include:

1. Predatory fish: Large fish such as sharks, barracudas, pike, and groupers are known to prey on smaller fish.

2. Birds: Many species of birds such as herons, kingfishers, eagles, and pelicans are skilled fish hunters and feed on fish as a primary food source.

3. Mammals: Marine mammals like seals, sea lions, dolphins, and otters are known to consume fish as a part of their diet.

4. Reptiles: Some reptiles like crocodiles and alligators are opportunistic predators and will prey on fish when the opportunity arises.

5. Insects: Insect larvae like dragonfly nymphs and water beetles are also known to feed on fish, especially smaller fish and fish eggs.

Overall, fish are an important food source for many animals in aquatic ecosystems, and their populations are kept in check by various predators.