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fin gunk

  1. Strange Blue-ish Gunk on Betta's fin

    Betta Fish Diseases and Emergencies
    So, basically one of my bettas (Who I only really own because the prior owner didn't want him anymore and was planning to starve him to death. Wow.. I know.) has developed this blueish gunk on his upper fin, and it seems to be spreading lately. I'm not sure if it's ick, or what. Whatever I read...