My Guppy Has A New Black Spot? Help

Discussion in 'Freshwater Fish Disease' started by Ryushokan, Jun 13, 2018.

  1. RyushokanNew MemberMember

    So of course it's my favorite guppy, who now has a large black spot on one side of them.
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    Its the one right on his side, it wasn't there in the past I just noticed it a bit ago. I was wondering of he is hurt, its a medical issue, or its normal and just weird. XD Please help, I am trying to breed him, he is my favorite.
     




  2. FahnFishlore VIPMember

  3. RyushokanNew MemberMember

    I will try to take a better picture, and I have been meaning to get PH strips and other testing stuff, but I did just put them in a new tank that has dirt substrate unlike their old one, but its been over a week since the switch. Its gone... I just went to take a picture and the spots poof
     
  4. FahnFishlore VIPMember

    Dirt substrate will leech ammonia and other organics for several weeks, and without lots of live plants to soak up all that stuff the water can get toxic pretty quickly. Are you using actual dirt capped with gravel or something like ADA Amazonia?
     
  5. CanadianFishFanWell Known MemberMember

    My guppys from *cough* petsmart, all did the same. Many turned different colors and got lots of black spots. It was cool and harmless.
     
  6. RyushokanNew MemberMember

    Its mostly gravel with spots of buried dirt in places I have plants growing. So it should be ok...
     
  7. FahnFishlore VIPMember

    Without having a way to test your water you can't be too sure. I'd take a water sample to an LFS or invest in a liquid test kit.
     
  8. RyushokanNew MemberMember

    Thanks, its just Ive had them for months and there was no change till now, *shrugs*
     
  9. RyushokanNew MemberMember

    Thanks, I should be able to buy some basic water testing stuff at the store, Ill post an update when Ive tested everythung.
     
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