Hadnt seen it b4. I only saw it a couple times. I cant get anything below 5 since my tap water is 5 ppm.Is this behavior "normal" for the discus, or did it just start? If you could snag a video of the discus doing this we could be more helpful.
Have you ever had your eye lid or lip twitch? Or some other muscle? Imagine that but on the fins.Hard to imagine ... bettery if you have video feeds or some sort ...
Talking about Discus I had a scary encounter when I went to LFS and in one of the Discus tank 2 huge adult Discus died and floating around the tank.
Imagine your large size dinner plate floating in a tank... poor Discus
Hes fine now. Probably just stress, he has only been here for a couple days.pictures and video?