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aggression

  1. perhaps in over my head (super aggressive fish)

    New To The Freshwater Aquarium Hobby
    I decided to start a small, 10 gallon tank in August. I started with 3 glofish tetras and 3 guppies. The local chain store told me they would get along fine. A month or two in, I found one guppy had a damaged tail. I thought it was fin rot so I used a treatment for that. He almost completely...
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