To preface, I work at a pet store, and I've had fish the past 28 years.
Yesterday, I moved my 10 gallon tank from my mother's house to my apartment. Please don't lecture me to get a bigger tank. I live in a 250 sq ft apartment. Simply no room for it.
The tank was coming along fine. I had that specific one for 10 months. It had 3 kuhlii loaches, 2 danios, and a betta. They've lived peacefully together there the whole time. I've done extensive research on the fish I have, and I made a nice, heavily planted ecosystem for the tank.
When I moved yesterday, I cleaned the tank thoroughly, and added a few more things. I put in 2 blue rams, 3 danios and 2 snails.
Everything is doing great but the blue rams. They are very peaceful and the other fish are quite peaceful towards them. No nipping at all and I've watched the tank for quite a while to make sure of this. There is no fin damage. It looks like fungus is growing all over the blue rams' scales. No idea why this is and it's getting progressively worse. I never have this kind of problem.
For reference, I have a 20 gallon HOB
filter, and I keep my temp at 81. Which is fine for everyone. My ph is 7. Blue rams like that lower ph slightly better than other SA cichlids.
I'll take a picture if I can.