Chamaedorea metallica...Fishtail Palm Wow-what an unusual plant awesome name too! This is a palm that like hangs in the forest of Mexico so prefer lower light levels than other palms. The foliage has a metallic sheen to it which is where the name Metallica originates from. Rarely offed especially at this size as these are soooo slow growing. Limited numbers 
 
Care: Keep the soil moist at all time you can let the top part dry slightly before each watering. Indirect light would be suited definitely not direct sunlight as this will scorch her metallic leaves. 
 
Other information:
Size: Pot Diameter 14cm - Total Plant height approximately 40cm with 
Toxicity: Considered poisonous. Keep away from children and animals.
Difficulty: Easy - Recommended for the plant enthusiast and collectors 
Feeding: General, the majority of houseplants should be fed every 2nd watering during the growing season (Spring and Summer), for me, it's about which every 14 days. In autumn and winter, I feed less, as indoor plants will require fewer nutrients.