Very Worried : (

[bobz]

I am very worried. I have had my gecko for over a week and he still hasnt eaten, i am really starting to get worried. He is starting to get skinny. He is a golden gecko and lately he has had alot of energy but hasnt been eating. Could it be the size of his home? it is a 100+ gallon tank. DO u think it would be a good idea to get him a female to maybe help him out? I dont know i am just really worried about him, what should I do? Any ideas? Also he is starting to change to a different color is this becasue of malnutrtion? he is going more to a brown or black type colour.