Hi I was wondering if you can help me, I have a guppy grow out tank and this morning they all seem to be hovering around the top section of the tank and doing random darting motions. Ammonia, nitrite and nitrate all ok. My water is soft so buffering with some corals and Seachem Neutron Regulator. PH is just under 7.0, GH is a little low 53.25 PPM or 3dGH, and KH is 2dkh. I gave them a lot of food this morning, did I overfeed maybe? Video below
. Shimmying is a symptom rather than a single disease, and an indication that a fish no longer has proper control of its nerves and muscles. It occurs when fish are under severe stress, most often because of environmental problems.







