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The adult Big Sandy crayfish range from 3 to 4 inches (7.6 to 10.2 cm) in length. Like other crayfish, they have been referred to as "miniature lobsters" since they share similar appearance. The colors of Big Sandy crayfish shells range from olive brown to light green, and their cervical grooves are outlined in blue, aqua, or turquoise. [6]
The genus Cambarus is the second largest freshwater crayfish genus inhabiting the Northern Hemisphere, with only sixty fewer species than the genus Procambarus. [2] Though Cambarus are varied across species, the two terminal elements that make up the male form I gonopod form ninety degree angles with the central appendage, allowing for their identification.
The Guyandotte River crayfish (Cambarus veteranus) is a species of crayfish found in a small stream system in Wyoming County, West Virginia, US.They are closely related to the Big Sandy crayfish (C. callainus), and until recently, the two were thought to belong to the same species.
Crayfish usually have limited home range and so they rest, digest, and eliminate their waste, most commonly in the same location each day. Feeding exposes the crayfish to risk of predation, and so feeding behaviour is often rapid and synchronised with feeding processes that reduce such risks — eat, hide, process and eliminate.
The groups gave notice of their intent to sue if agencies don’t do more to protect species affected by surface coal mining.
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Cambarus robustus, known generally as the robust crayfish or Big Water crayfish, [2] is a species of crayfish in the family Cambaridae. It is found in North America. [3] [4] [1] [5] The IUCN conservation status of Cambarus robustus is "LC", least concern, with no immediate threat to the species' survival. The population is stable.