Yes, much like other living species, fiddler crabs do sleep. However, they tend to only sleep when its between 75-85 degrees, as this is when they are most comfortable.
in water in water
Yes.
Crayfish sleep until there's light.
good to know, i will sleep better knowing this.
Crayfish
Crayfish are known as both crayfish and yabbies in Australia. "Yabbies" are freshwater crayfish, often found in rivers, creeks and dams in rural areas.
My older crayfish died and my littler crayfish has not yet how do/can they die?
protects the crayfish
Do crayfish have tarritoris
Crayfish are omnivores.
Crayfish are related to small lobsters. Here is a link for pictures of crayfish. http://mackers.com/crayfish/pics.htm
Crayfish-ess.
No, a crayfish is not a mollusk. It is an arthropod.
It protects the crayfish from predators