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That depends on the species of crayfish. There are both fresh water and salt water crays ranging in mature sizes from 3 inches to 60 inches. If kept in a fish tank with fish, most of them will grab a lump of fish to eat if they get half a chance. IMO Crayfish not in the wild should be on a plate cooked and ready for eating.

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15y ago

What else can I help you with?