Angel diseases

[luvrei]

There seem to be a disease in my tank that is only affecting angelfish. The angelfish will eat normally for 4 weeks and then suddenly stop eating and died 1-2 days later. Other types of fishes are not affected by it. Any idea what type of diseases is it?

 

[prodman]

Was this a new angelfish? Or one you had for longer than 4 weeks? If it was new it sounds like it might have had internal parasites or flukes

 

[luvrei]

A new angelfish. I am quite puzzled by it because I had tried angelfish from different LFS and they all suffered the same fate.