Redness On Gill Plate Of Mollie

[Denni]

Hi,
 
I have a half white/black female mollie that has some redness on the gill plates (both sides) 
I originally thought she might have been nibbled on by another tank mate, but now she's looking a bit thin.
She can swim around alright (no clamping fins) but sometimes she just sits at the bottom like she's resting. 
 
We've recently changed 50% of the water and vacuumed the gravel and checked the pH, all of which showed alright. The only thing I can think of it that the temperature could be affecting her (it's been getting to around 40C)
 
If its a bacterial infection, would I have to remove her from the tank?? I'm pretty worried

 

[the_lock_man]

Hiya,
 
Redness around the gills often indicates ammonia poisoning. Have you tested your ammonia, nitrite, nitrate and pH recently?

 

[eaglesaquarium]

It would also help to know the temperature of the water, as the air temp is rising...

 

[Sophie]

Option number 2, if ammonia and other water parameters are ok;
Red gills can also be a sign of gill flukes/parasites.
Is the breathing rapid?

 

 

[Tanya farrell]

My mollie is like this too , I have treated her is fungus and white spots , my ph and that is good and so is the tem , what eles could I try ? Thank you

 

[NickAu]

A close up photo would help,

 

[Tanya farrell]

Hope you can see it in the pic