#family_Rajidae__Rajidae  bottom-dwelling tropical rays: skates
  supertype:  #fish_family  any of various families of fish
  member of:  #order_Rajiformes
  member:  #skate  large edible rays having a long snout and thick tail with pectoral fins continuous with the head; swim by undulating the edges of the pectoral fins
  member:  #genus_Raja__Raja  type genus of the 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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