is the numbs being reviced -- is the numbs being reviced -- >> an i'm barack obama and i approve this message now mitt romney's attacking the >> anpresident on medicare? the nonpartisan a-a-r-p says obamacare "cracks down on medicare fraud, waste, and abuse and strengthens guaranteed benefits." and the ryan plan? a-a-r-p says it would undermine medicare and could lead to higher costs for seniors... and experts say ryan's voucher plan could raise future retirees costs more than six thousand dollars. get the facts. you . >>> a new rare fish may appear on your menu. it's call paiche. chefs say it has a glorious taste and texture, but best of all it's sustainable, bred on fish farms. it's a big beautiful beast of a fish, a freshwater delicacy that can weigh up to 500 pounds, making it one of the largest in the world. it hails from south america, and local chef xavier deya loves it. >> and we -- it's a very firm white fish. >> reporter: he went to entrepreneur to explore the possibility of the paiche, a once gravely endangered species. it's in and out sustainably farmed if a way to allows