Cincinnati’s arts organizations will unwrap some fun new shows this holiday season. Ensemble Theatre Cincinnati presents the world premiere of a musical about Fiona the hippo, a true Cincinnati story. At Cincinnati Playhouse in the Park, there’s a new production of the holiday chestnut “A Christmas Carol,” specially designed for the new, state-of-the-art Moe and Jack’s Place – The Rouse Theatre. For the first time since 1999, the Kentucky Symphony Orchestra is presenting a Christmas show.…