my glofish tetra has been acting weird in the past few days (swimming upside down, in circles, being hyperactive, eating food upside down, spinning, tumbling against the plants). I have 4 Glofish in a 20 gallon tank I recently upgraded a month ago. I have had these same fish for the past 2 years with no issues at all until now
water measures levels all parameters are normal except for the PH little low for the species recommendation and all the other 3 fish are normal . all of them are eating well (including the weird one)
please advice . your help is greatly appreciated
