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help fin rot black hurt

  1. I think he has bad fin rot...

    Betta Fish Diseases and Emergencies
    My fish Saix has been having some problems. He's covered in black goo, his fins have been tinting red, and his back fin is now half gone. I'm a new fish owner, so I have nowhere to turn to but the internet for answers. Please help! :( Before: After: Housing What size is your tank...
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