What types of food do yabbies and crayfish eat

Yabbies are crayfish. They are the largest range of crayfish in Australia.

Common yabbies are primarily nocturnal detrivores. They prefer to feed at night time and eat decomposing plants, algae, and animal parts including feces. However, they also feed at daytime whenever they encounter fish or animal remains.

Crayfish are principally vegetarians and are most active at night time. They are also opportunistic omnivores meaning they can eat meat when it is present.