I just bough 4 platy's from Petsmart. After floating, acclimating and adding them to my tank, I noticed that the new fish have bright red gills. None of my older platy's look like this. Could they have something wrong with them from Petsmart?
Red gills are often a sign of ammonia poisoning. A lot of fish will develop the red gills a little after the initial exposure, so its likely the red gills are from their former life/treatment and not from anything you did (since you said you are testing the water).
Sometimes, its just the color of the fish, but since you noticed it on all of them, I am guessing somebody in their past was not dutiful enough on pwc. There may not be any last effects, but be sure to keep an eye on them. For things like this, clean water and good luck will help out the fish a lot.
Chronos313 said:I have a twin bar platy that has red in her cheeks. My levels are perfect so in some I think it's just a trait. I think if she was acting odd or breathing irrevocably I'd be concerned