Panda Corys Changing Colour?!

[Chris&Phia]

I've only had my tank about a month now and i have 2 panda coridorous' in it, but over time i've noticed that one of them has turned a sort of brownish tint compared to the other one? Whereas the other one is still the same, when i bought them they were quite little and therefore am assuming they were not very old, is it just the way they grow or is it a symptom of something?!

Thanks, Phia.

 

[drewry]

some times Chris&Phia
corydoras do change coulor to sute the substaite
but thats usally within a few days ov there new habitat

you say uv had your tank about month
is ure tant cycled proply ?
whats ure stats , ph, amonia ,nitrate,nitrite
as pandas are pretty senciteve

regards dave

tank

 

[Chris&Phia]

well i have medium sized white gravel on the bottom of my tank so im guessing it cant be turning brown because of that.
i've been meaning to get a test kit but im guessing it is ok because i have 5 adult guppies and 10 teenage guppy fry and 70ish guppy fry and a brittlenose plec in the tank too and they are seem to be very happy and developing well so i assume it is ok. i do regular water changes and syphon out the gravel.
i assumed it could be that it might be a female as it is a bit bigger than the other, even though when i bought them they were basically the same size?

Thanks, Phia.