Rusty crayfish was created in 1852.
The rusty crayfish came from the Ohio river basin.
other native crayfish :)
Humans
Many people think there is no predators of crayfish in England. Well they are morons who don't see many river animals. My mum LOVES crayfish and me and my family are from England and in fact, we caught 4 crayfish today and we got them in a pot. There is actually natural predators. Herons, otters, wild, feral or stray cats, mink and other crayfish eats crayfish.
Crayfish eats Earthworms
Benthic animals live in the sediments at the bottom of lakes. A good example is the rusty crayfish, found in North America.
big fish
An herbivore eats plants. Something that eats meat is a carnivore.
A crayfish eats a varioty of food. It can from algae to small fish. It is an omnivore.
A crayfish and A snapper a da
Native species of crayfish that are are a normal part of the ecosystem are not harmful. But there are several invasive species, like the rusty crayfish, that can kill off native crayfish and other crustacians. The rusty crayfish has a thicker shell and less "meat" and therefore are are not a good part of the food chain depriving the ecosystem of the nutrients from the crustacians it replaces. Invasive species also tend to destroy large amounts of water plants that further degrade the food chain. Also there is an infection that occasionally occurs in crayfish that can spread to other animals but this is usually a normal part of the life cycle and not neccasarily harmful.