fish turning pale at night

Discussion in 'Tropical Fish' started by ferretfish, Aug 7, 2011.

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  1. ferretfish

    ferretfish Sea Dragon

    Joined:
    Aug 5, 2011
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    Location:
    wilmington,DE
    hello at night when the lights are off , some of my fish turn pale. for example at night my scopas tang becomes almost all yellow and then when i turn my lights on it goes back to normal. my yellowtail damsel and pj cardinal do this to is this normal. all of my water parameters are perfect to. thanks any thoughts.
     
    ferretfish, Aug 7, 2011
    ferretfish, Aug 7, 2011
    #1

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  2. Corailline

    Corailline Super Moderator

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    It is a dry heat, yeah right !
    Totally normal, there is actually a term for tangs in that coloration.

    Fish sleep.
     
    Corailline, Aug 7, 2011
    Corailline, Aug 7, 2011
    #2
  3. Reef-a-holic

    Reef-a-holic 3reef Sponsor

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    KC, MO
    +1...more noticeable in some fish than others...some also get darker...I've seen blue damsels (yes I know devil fish) turn almost completely black at night or when stressed.
     
    Reef-a-holic, Aug 7, 2011
    Reef-a-holic, Aug 7, 2011
    #3
  4. ReefSparky

    ReefSparky Super Moderator

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    Agreed. Completely normal and common.
     
    ReefSparky, Aug 7, 2011
    ReefSparky, Aug 7, 2011
    #4