Hi everyone. I'm a bit of a newbie at this and I have 3 fish with white fungus on their lower mouth. I've been using something called Melafix for the last 7 days and although my zebra danio is improving, my angel fish and pristella tetra aren't. Should I persevere or is there another product I should be using ? These fish are in my main tank with 4 others. Also, I've got a pregnant platy in my quarantine tank and she started giving birth last week - she popped 3 out, stopped for a few days and has popped another 4 out and stopped again. Should I be concerned - she's still a bit large with a noticable gravid spot. I'd appreciate any advice thanks.