a4b972ab_m_and_Freshwater_Fish_Problems__Problem
[Symptoms] Newly purchased fish do not adapt well to the tank. In some cases they will hide and will not eat, or hover near the surface. Loss of one or more fish occurs within a few days of purchase. [Solution] When a fish is transferred from one tank to another, there is a certain amount of stress involved and some fish may not be able to adapt. The loss of one or two fish out of a group is not normal, but if it occurs it does not necessarily indicate a serious problem. (Check our guarantee policy for partial replacement). Keep a close eye on the other fish for a few days. If you are having problems with new fish, we also suggest that only the more hardy fish be purchased for a while. [Problem] 
Problems with Newly Purchased Fish
Aquarium and Freshwater Fish Problems
Problem