Platy Flicking And Slightly Red Around Head

[LastBoy5cout]

Evening all,

Have 1 mickey mouse platy and 4 tuxedo platies. One is and always has been really thin compared to the rest of them. He seems to eat enough but never puts weight on. But staring at them tonight one of my fatter females ( at least i think she is female ) was flicking against my bogwood, no visible signs of infection ich etc. But on the skinny one and another one they have red spots and marks around there heads, almost like measles.

My camera wouldnt pick it up they are that tiny, Im not sure whether its just there colour coming out or what.

But concerned now as they have been feeding well the last few days and have shown no other signs of illness, anyone got any ideas?

 

[black molly3]

ive got this problem but with my guppies and a few of thefry i see them occationally scarach against the plants or something just one of the females and the male has red around hs gills but seem fine. no signs of ich or nothing.