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fat fish

  1. Cyprinids and Atherinids
    My 20 gallon long tank recently finished cycling and I added 6 harlequin rasboras, 6 albino cories, and 1 betta. When I got my rasboras, 2 of them were super fat and the rest looked normal. Within 2 days the first fat one died and I tested my water but everything was good. Now it's been a...