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Today I was cleaning my step moms fish tank and saw two little red bumps on a gourami. Can anyone help me with information about what it could be. Thanks!
The water from the tap is under pressure, and contains more dissolved gasses. When you put it into the tank the extra gas bubbles are released. It's generally harmless and will go away in a couple of days as things settle down. So basically it's dissolved gasses coming out of the new water.