user: Question: who was the voice actor when the species is Hedgehog?
Columns: ['Name', 'Jewel', 'Species', 'Gender', 'Jewel Power', 'Attribute', 'Birthday', 'Media Debut', 'Voice actor']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Ruby ( ルビー ? )', 'Ruby', 'Japanese Hare', 'Female', 'Courage', 'Magical Red', 'July 25', 'EP 1', 'Ayaka Saito']
SQL:

assistant: SELECT "Voice actor" FROM "Table" WHERE "Species" = 'Hedgehog';