I just bought 2 scissortail rasboras and the next 2 days i saw them dead . i woke up the next morning and 2 more fish were dead. did the two scissortails bring a disease to the tank
How long has your tank been running?
What other fish have you got in the tank and how long have they been in there?
What is the size of the tank?
What are you tank statistics? PH? Nitrates? Nitrites? Ammonia?
So many things could have caused the deaths in your tank it is important you give us as much information as possible so we can help you. There is a guide as to what info to give in your posts in the pinned topic in this forum