Biorb

Question
I just ordered this 4-gal tank.
http://www.petco.com/Shop/Product.aspx?sku=1018086

I would like to put ONE black fish in? What is my best choice?

Answer
Hello Evelyn,
Im not sure what you mean by one black fish. Is that a specific breed or is it just any fish of all black fish that can go in that tank. Of your talking about any black fish that will go in this tank it will be fine. Please ask again with more detail.
Hope This Helps
Kyle