Peppered Cories Changing Color?

[fire4ice]

After moving a group of 5 peppered cories out of quarantine and into my main tank, I noticed that they were paler than they had been before. The main tank has white sand as a substrate, while the quarantine tank has blue/green gravel, and I've noticed that my otocinclus is paler while he's over the sand than when he's on the rocks or wood. But I know that some types of fish become paler when they are stressed. So, I was wondering: which is the case with cories?

Also, one cory has a bent top fin, but seems to be acting normal. Should I be worried about it?

 

[StrontiumDog]

They are most likley stressed due to their move, but once they have settled in i'm sure they will regain their colour.

Unless there is any infection on the fin, I wouldn't worry about it. It probly happened either when first hatched or as a young fry.

 

[Coryologist]

After moving a group of 5 peppered cories out of quarantine and into my main tank, I noticed that they were paler than they had been before. The main tank has white sand as a substrate, while the quarantine tank has blue/green gravel, and I've noticed that my otocinclus is paler while he's over the sand than when he's on the rocks or wood. But I know that some types of fish become paler when they are stressed. So, I was wondering: which is the case with cories? - "Quote edited by Coryologist."

While the move will surely stress your fish in the short-term, as someone who has been photographing Corys over different types and colors of substrate for many years, I have observed that most Corys will look different over white sand then they will over dark gravel. Your mileage may vary. - Frank