one of my oldest koi has gone from eating in a healthy manner to suddenly in distress right in front of me. seems to be drifting and somewhat gasping and oddly swimming backwards. struggling to swim. I seems like she literally just a few minutes prior was eating just fine with the rest of the fish.https://1drv.ms/v/s!AlUPcCBTwbr_k7gEbiH7CjrHkTklww
I tested the parameters yesterday and they're fine I'm retesting now.
she will have moments of struggling then drifting. maybe some sort of organ failure? I scooped her up in my hands and looked in her mouth. nothing seems unusual.