A fungus and an alga work together in symbiotic relationships to create lichens, a sophisticated form of life.
Although fish can eat lichens, it is important to note that lichens do not grow easily on water or ice.
Instead, they are found adhering to rocks in the intertidal zone and underwater.
Many lichen species can only be found on driftwood.
For example, flies, crickets, grasshoppers, beetles, and insects, such as super worms, mealworms, bloom worms, leeches, and nightcrawlers, are eaten by many fish.
Small rodents, rats, snakes, frogs, turtles, and other small fish are some of the larger fish prey.