#genus_Raja__Raja  type genus of the family Rajidae
  supertype:  fish_genus  any of various genus of fish
  member of:  family_Rajidae
  member:  gray_skate__Raja_batis  common European skate used as food
  member:  little_skate__Raja_erinacea  most plentiful skate in North American inshore waters in summer; to 21 inches
  member:  thorny_skate__Raja_radiata  cold-water bottom fish with spines on the back; to 40 inches
  member:  barndoor_skate__Raja_laevis  one of the largest skates (to 5 feet); an active skate easy to hook

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