sick mappa

We bought a Blue Tang today & when I got it home & under our tank light I noticed part of his black part in its back looks lighter almost faded. First time with a Blue Tang & don't know if this is normal or a sign it's sick. I have it in quanitine to be safe. I see no white spots so I don't...

Hello we recently moved our fish from a 150 to a 210. Unfortunately my husband kept the puffer alone in a fish keeper box way too long IMO. I then demanded he place the mappa into the 30 gal container with the other fish as it had water movement, etc. Well we did our best to keep the caves and...