Hello everybody!

I recently bought a fish, a Pearle(arowana) of 5-7 inch and it is at home since five days, but I got a problem with it,it is not eating could you tell me why and what must I do as I am very anxious?.Any info about the Pearle could help me and I will be very please if you tell me more about this fish. I need HELP!!!

ThanX in advance