The Zebra plant is from the same family (marantaceae) as the popular indoor prayer plant and has many similarities, although the Calathea zebrina grows taller and can be slightly more difficult to grow. It's sometimes named prayer plant when sold at garden stores and its common name (Zebra) is also given to the Aphelandra squarrosa.
Being a tropical plant native to Brazil the Calathea does require a warm and moist environment which encourages the foliage to thrive and look its best.

Care:

In its natural habitat the Calathea dwells in forest areas shaded by trees without direct sunlight, which is why a bright but shaded spot within a warm greenhouse or conservatory suits them very well. Anywhere else indoors just needs to be bright without direct sunlight.

Feed with a balanced liquid fertilizer every two weeks from April - October. You'll need to re-pot once every two years, during spring.