Crayfish can be very interesting freshwater aquarium inhabitants, but it is often difficult to identify a species or even find information
about its requirements in captivity. Crayfish are found in a variety of habitats. Occasionally, they are found in brackish water, and some species can survive in
saltwater for several days, but no marine habitats are permanent locations for crayfish. They are solitary animals that reside
in dens or crevices, which they defend against intruding species members.
