Yellow Tang reddish discolouration

Discussion in 'Quarantine Tanks, sick fish, QT corals' started by wvdheever, 7 Jun 2014.

  1. wvdheever

    wvdheever

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    Hi

    I Need some help with my Yellow Tangs

    They have developed a reddish discolouration on the back their bodies towards the tail end. They have been together in the tank for more that 12 moths and I have never seen this on them. :(

    I hit Google and there are hundreds of possibilities, from infections to scuff marks, and just as many treatment options, but yet there is no clear answer.

    I did a 20% water change 3 weeks ago.
    Parameters seems fine

    PH - 8.1
    PO4 - 0.25

    photo 2.JPG
     
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  3. Ridwaan

    Ridwaan

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    That normally happens if u have 2 or more tangs when they fight woth their tails...i just leave it be and it goes away...
    Thats from my experience..
     
  4. wvdheever

    wvdheever Thread Starter

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    Thanks
     
  5. carlosdeandrade

    carlosdeandrade

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  6. Riaanvw

    Riaanvw

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    Hi

    My yellow tangs is also red like the posted picture. It appeared after the extreme cold we had here in Gauteng. Water dropped from 25.5C to 22.0C over night. I how ever did fix this problem by adding another heater in my sump. Temp is now stable.

    I also have Bio pellets. So your comment got my attention. Can you explain why you think adding more pellets will solve the problem? Is it NO3 related?
     
    Last edited: 7 Jun 2014
  7. wvdheever

    wvdheever Thread Starter

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    Yes I do ...
     
  8. wvdheever

    wvdheever Thread Starter

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    Hi ..

    The TEMP did drop overnight. I run my temp @ 26 and it dropped to 23.

    I already have 2 heaters in the tank. I run 1 @ 26 deg and the other is set at 25 for a backup.

    Will add an extra heater to the setup ....
     
  9. Christo

    Christo

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    From my Experience and Research this is common for Guys using BIO_PELLETS
     
  10. Woo Tang

    Woo Tang

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    Hey guys.
    This is a bacterial infection. I had this issue with my yello a tang as well and the problem was unknown. (Probably like we get the flu) I read countless threads and found the answer in kanaplex that I bought from perky pets.
    You can add it to either the frozen food or water but the tang needs to be quarantined.
    The thread I read said that all fish might possibly have it but you can see it on the yellow tang because of its colour. I went ahead and QT all livestock. End result was a red mark free tang. It took 7 days to clear up with kanaplex. I did add it to the water column though and did the food dosing.
    Hope this helps.
     
  11. Woo Tang

    Woo Tang

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  12. carlosdeandrade

    carlosdeandrade

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    Yes, it is a bacterial infection. It clears up if your fish are healthy and eating. We get it on our yellow tangs in the display tank in the shop when we top up with bio pellets. I wouldn't be stressing about it.
     
  13. Ridwaan

    Ridwaan

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    Wow...makes sense...
    Ive been using bio pellets..

    But my two yellows were always fighting so thought it was the fighting casing this as the red marks only appear at the tail where the spikes are located...
     
  14. jaquesdp08

    jaquesdp08

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    It's water quality do some waterchanges and it will go away
     
  15. wvdheever

    wvdheever Thread Starter

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    @carlosdeandrade would you recommend me turning off the pellet reactor ?
    Fish are healthy and eating like crazy ...
     
    Last edited by a moderator: 26 Nov 2015
  16. carlosdeandrade

    carlosdeandrade

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    Definitely not. It's your nutrient export. Carry on as normal, the fish do clear up.
     
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