I lost one of my 2 remaining Glolight Tetras (I'm not replace any Tetras, haven't had much luck with them). About 10-12 days ago, I noticed he stopped eating. No other symptoms right away. About a week ago he started acting weakish, swimming funny but still trying to keep up with the pack. I segregated him within the tank. No other fish were showing any symptoms, everyone was eating and acting healthy. Normal parameters (0,0,5,7). PWC
of 20% weekly. He finally passed last night. This morning I notice the remaining Glolight is going up to food but not eating but other wise seems healthy. Any ideas?