While they might occasionally nibble on some aquatic plants, their primary diet consists of:
* Insects: They eat a wide variety of insects, both aquatic and terrestrial, like mayflies, caddisflies, and stoneflies.
* Smaller fish: Trout are opportunistic feeders and will eat other fish, especially if they are young or injured.
* Crustaceans: They also eat crustaceans like shrimp, crayfish, and scuds.
* Worms: Earthworms and other aquatic worms are a regular part of their diet.
Therefore, they are classified as carnivores due to their predominantly meat-based diet.