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  1. Greetings! and HELP! please

    Member Introductions
    Hello from Philadelphia! Our 5 year old comet goldfish, Hans' mouth is peeling causing he/she to thrash,etc. He's alone in a 20 gallon tank (I know it should be 30) and we've tried various Bacteria & Fungus treatments and water changes. The rest of his/her body seems perfectly fine and it...