I just got 6 neon tetras added to my cycled planted 10G fish tank two hours ago. I noticed they are opening and closing their mouths really fast. Is this normal? Stress?
Ammonia - 0ppm Nitrite - 0ppm Nitrate - 10-20ppm PH - 6.2
I am attaching a video I took. Like I said I just added them 2 hours ago.