Lip swelling and cotton on my cichlids…help!

My A.Cichlids are sick and I have lost a lot of them..The picture that I have attached is what the ones that have died look like..Starts with the lips swelling big,and looking like they have cotton on their face , eye’s bulging , and large spots on the body…
P3190288.JPG (41 KB)

P3190288.JPG (41 KB)