| http://www.w3.org/ns/prov#value | - Most crayfish live from 2 to 4 years, although some cave crayfish may live over 10 years.Crayfish are threatened by habitat destruction caused by dams, water pollution, erosion, siltation, in-stream gravel dredging and, particularly, the introduction of nonnative crayfishes and other exotics.
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