Anyone know what this is on my Chromis?

Discussion in 'Fish and Invertebrates' started by HeatO, Aug 30, 2017.

  1. HeatO

    HeatO Supporting Member

    About 2 weeks ago I noticed a big white bump on the mouth of one of my Chromis fish, it is slowly getting bigger. I have 4 other Chromis that are completely fine, no signs of this on them. I have tried to do research to find out what it might be - thought maybe a parasite but it looks like it is under the skin. I did a freshwater dip to see if it would fall off if it was a parasite, but this did not work. He is eating and swimming around (but kind of stays in the corner a lot swimming at a 45 degree angle). I'm worried about what this is. Has anyone seen anything like it?

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  2. Coral reefer

    Coral reefer President

    I would suspect bacterial infection.
  3. Kremis

    Kremis Supporting Member

    could be puss underneath the skin
  4. It's a sign he's asking for a QT tank.
  5. HeatO

    HeatO Supporting Member

    Thanks everyone, this was helpful. Moving to a QT tank and treating for bacterial infection.

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