Corys Losing Colour....

[BigIan]

water stats....

amonia 0

nitrite 0

nitrate less than 5 ppm

PH 7.2

kh 40 mg/l

temp 25 c

nothing has changed in the tank since this has started happening, the corys are behaving normaly but are losing there colour, they`ve become much paler

the substrate is nice and clean theres a 25 % water change every week

no other fish are showing any other sort of simtoms and its only some of the corys that are affected

 

[BigIan]

any one got any help?

 

[furryrabbit]

what kind of cory are they? how old are they - maybe their just getting older , my bronze cory - dave, was bought real young and after about six months he adopted some blackish colour on his sides.
at first i thought this an infection - but after browsing images on the net i found that many adult bronzes seem to have similar colouration. could yours be losing " baby colours" or something?

 

[BigIan]

C. metae

theyre probably less than a year old, i bought them 3 months or so ago,

its come on all of a sudden, one or two of them lost there colour shortly after i got them when i was treating the tank for ich and even though i halved the dose of ws3 they still reacted badly to the meds,


They seem to be getting there colour back today though i can`t under stand why though, no other symptoms they are eating helthily and are acting normaly.. so who knows

 

[furryrabbit]

well the main thing is that there healthy