My beloved Sid Fishus died suddenly. I don't know why, so any thoughts would be appreciated.
When I got Sid, he was thin and lethargic and had some kind of infection that made his poo pale. I thought it might be parasites, but before I could obtain worming meds his poo became way more normal and he looked much heathier in general, which I attributed to clean water and good food, and it seemed whatever disease it was had run its course.
Then he got ick. We cured that quickly.
Then his fins (which were always a bit ragged, since the day I got him) got an aggressive case of fin rot. AQ salt produced healthy tissue quickly in the hospital tank. But in one day back in his tank with no salt, the rot came back and was even worse. He went back in the salt, which slowed it again.
Back in his regular tank, all seemed well. I am scrupulous with water changes and acclimation, and had just done a 30% water change (and tested the water before and after - 0% ammonia) when I noticed he couldn't close his mouth fully and his gills were 'gasping' rapidly. His skin also looked a little funky, and I assumed it was a sudden bout of columnaris.
I set up the hospital tank again, put him in with AQ, but he got worse by the minute and was darting and shaking his head, very distressed. Then I gave him a conservative dose of Myxazin (it says one drop per litre, but he had a half dose as I'm not experienced with that medication and the drops looked awfully BIG).
Then he just - stopped swimming. It was so sudden. All of this was in a very short space of time. I watched him sink to the bottom of the tank - and he was dead.
I tried SO hard to do the right thing for him - micro managing much? He just never did seem wholly well, but none of the diseases he had tend to insta-kill fish.
Bad water can do that - but his water was super clean. Our other betta is fine, with the same water quality. I just don't know.
And I really miss him..