Banded Cat Shark Health

[BillyP]

So I'm definitely not new to the hobby but im new to keeping banded cat sharks. Is this whiteness normal? Parameters are stable. Nitrates under 5. Undetectable ammonia and nitrite. Feeding every 2-3 days and recently ordered iodine tablets. Had her for about a month now. Feeding mysis.

 

[Dsnakes]

Were all lights off when the photo was taken or right before? Many fish will lose color while resting or in the darkness.

 

[BillyP]

Were all lights off when the photo was taken or right before? Many fish will lose color while resting or in the darkness.

The main lights turned off 1 hour ago and I just had a small refugium light turn off 5 minutes before the picture.