pale

I have just gotten a flagtail grouper I was wondering why he was pale he was a bright red then when I put him in the tank after a hour he started turning pale is it because of him trying to blend in or is he stressed or is their too much flow in the tank

So I bought an azure damselfish on Monday, and he is currently in QT. However, since I put him in he’s been looking quite pale and acting quite shy. I haven’t seen him eat any pellets whenever I drop them in (so maybe it’s time to drop in some frozen mysis that’s in my freezer lol). Even so, he...

So my little guy here is a foxface and i was doing normal quarantine procedure (was in the middle of copper treatment) when his fin rot started getting worse. He had fin rot when he arrived. So i stopped the copper and started furan2. Hes still eating a lot but now he turned so pale. He looked...