I received a 5–6" koi scopas last week, and I’m really worried about him. He initially ate after arriving, but has since stopped eating, looks thin, and now appears to have something covering his eyes. I’m looking for guidance on what to do next.
Here’s the timeline:
After watching the first video, the seller thought he looked stressed and that the eye looked scratched or irritated. He suggested isolating him back in QT and adding some established live rock to help prevent an ammonia spike.
I moved him back to QT today and added live rock from my sump. An ammonia test on the QT read 0, and there’s also an ammonia badge in place. I’ve been keeping the light off except briefly for pictures.
He’s now sitting upright on the bottom, barely moving. He didn’t react much to my hand being in the tank and showed no interest in food. All of my other fish appear healthy.
I’ve kept tangs for years, including an Achilles, naso, purple, yellow, and black tang, but I’m honestly at a loss here. I’m also leaving tomorrow morning until Friday, so I need to figure out the next steps and arrange care before I leave.
What would you do next? Does anything in these videos help identify what’s going on, particularly with his eyes and behavior? What additional pictures, observations, or water tests would help?
Video 1 - in the frag tank, before moving him back to QT:
Video 2 - back in QT; no interest in food:
Here’s the timeline:
- I initially put him in a small QT tank that had been seeded with established tank media for about a week. He ate during that initial period.
- After one night, I moved him to my established frag tank because he looked cramped in the QT. When he stopped eating, I also worried about possible ammonia. I didn’t test at that point, although the ammonia badge never showed any.
- The frag tank has a very passive sailfin, a small blenny, and a filefish. I haven’t observed chasing, fighting, or tail swiping. My last fish addition was over six months ago, and I normally purchase quarantined fish.
- In the frag tank, he mostly hid under a mushroom box or hovered in place, sometimes listing. He wasn’t interacting with the other fish and wouldn’t eat nori or mysis. Yesterday, I saw him attempt one bite of mysis, but that’s about it.
- Today, I noticed cloudiness or some kind of covering over his eyes, and his condition seemed worse.
After watching the first video, the seller thought he looked stressed and that the eye looked scratched or irritated. He suggested isolating him back in QT and adding some established live rock to help prevent an ammonia spike.
I moved him back to QT today and added live rock from my sump. An ammonia test on the QT read 0, and there’s also an ammonia badge in place. I’ve been keeping the light off except briefly for pictures.
He’s now sitting upright on the bottom, barely moving. He didn’t react much to my hand being in the tank and showed no interest in food. All of my other fish appear healthy.
I’ve kept tangs for years, including an Achilles, naso, purple, yellow, and black tang, but I’m honestly at a loss here. I’m also leaving tomorrow morning until Friday, so I need to figure out the next steps and arrange care before I leave.
What would you do next? Does anything in these videos help identify what’s going on, particularly with his eyes and behavior? What additional pictures, observations, or water tests would help?
Video 1 - in the frag tank, before moving him back to QT:
Video 2 - back in QT; no interest in food:
