if its a blue moon crayfish your talking about, then no. they're territorial and aggressive, and they would attack and eat any fish you put in there. however, if it was, say, a loach, then the loach would eat the crayfish. if you had Mexican dwarf orange crayfish though, they can be housed with any type of fish that will not eat them. they're very calm and docile.
Crayfish
Crayfish produce sounds primarily through stridulation, a process where they rub body parts together, often using their antennae against their carapace. These sounds can be used for communication, particularly during mating or territorial disputes. Additionally, some species may create noise by snapping their claws, which can also serve as a warning to predators. Overall, the sounds of crayfish are subtle and often go unnoticed in their aquatic environments.
My older crayfish died and my littler crayfish has not yet how do/can they die?
Crayfish are known as both crayfish and yabbies in Australia. "Yabbies" are freshwater crayfish, often found in rivers, creeks and dams in rural areas.
Do crayfish have tarritoris
protects the crayfish
Crayfish are omnivores.
Crayfish are related to small lobsters. Here is a link for pictures of crayfish. http://mackers.com/crayfish/pics.htm
Crayfish are invertebrates.
the crayfish resembles a lobster
No, a crayfish is not a mollusk. It is an arthropod.