Eating crab signifies goodness that will come from a distant place. Crab is also interpreted as unlawful wealth.
Seeing a crab signifies a man who is difficult to grasp, whose schemes are hard to understand, who is not easily reached, and whose companionship is difficult. Kirmani said that seeing a crab signifies a stern-natured person of lofty ambition and distinguished lineage. According to another interpretation, it signifies a bad-tempered, arrogant, and envious man.