Fishes and Shellfishes High in Cystine (81st - 87th) (per 100 g edible portion)

• Snow crab (raw)
  
  130 mg
• Blue shark (raw)
  
  130 mg
• Hard clam (raw)
  
  96 mg
• Oyster (cultured, raw)
  
  81 mg
• Freshwater clam (raw)
  
  80 mg
• Short-necked clam (raw)
  
  79 mg
• Sea cucumber (raw)
  
  50 mg