==The Fish Event Horizon==
The types of fish eaten in England can be divided into three periods:<br>1 <br>'''Period 1: C7th – C10th <br/>'''::dominated by Freshwater and Migratory2 '''Period 2: C11th – C12th <br/>'''::more Marine than Fresh Water or Migratory. 3 '''Period 3: C13th – C16th <br/>'''::some areas just have Marine<br>
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