Posted by Al on April 24, 2002 at 18:58:28:
I have a friend who has a 10 gallon aquarium with about 30 guppies. The other day, out of the blue, the entire group started huddling in a small space and appearing anxious. Sometimes they won't even break out of the huddle eat. Only the newborns are acting normally. The fish otherwise look and swim normally. The temperature and pH are normal, and haven't fluctuated. She added some "Algae Destroyer" last week, but she's been using it for a while with no apparent side effects. She's changed out a couple of gallons of water, with no change in their behavior. Has anyone seen this sort of behavior before, or has any idea what it might be? Thanks for any suggestions!
