I recently put my Crowntail Betta in a newly planted tank.
The water parameters were absolutely fine and Felix settled in immediately. Quite frankly, he was enjoying himself.
Well today (not even a few days later) his tank was cloudy and some of the plants had browned (not all of them but a few unknown "loose plants" did). I assume since they were loose plants that they just didn't work well in the conditions I put them in, so I figured a quick cleaning would do the trick. Felix was hiding behind his filter, which was rather odd. I removed him from the tank and placed him in the temporary cup (the cup that I bought him from) and his breathing seemed really shallow--but I figured he was a bit stressed as his color was dulled out too which normally happens when I clean his tank. Well, I finished cleaning out the tank, scrubbing it thoroughly, and now Felix is on his side in the temporary cup and his breathing still seems very difficult for him.
I assume he isn't going to make it the rest of the evening. I figured I'd keep him in the cup as he has to literally "jump" up to get a breath of air and putting him back in his tank would only be harder for him to swim up.
Now here's the catch...I have the same exact tank, same filter, same conditions (water parameters, plants, lighting, etc) but with a different Betta (Ozwald) and his tank didn't get cloudy, Ozwald didn't get sickly, and his plants are the same, meaning the same couple loose plants aren't making it, but the rest are flourishing--but as said, Ozwald is absolutely fine.
Felix was eating the other day--and this morning I didn't have time to check on them as I had class first thing, but now I come home to a severely sickly fish and I'm unsure what's causing this? Is he just severely stressed or is it just his time? I figured I'd keep him in his cup to see if he looks up as I don't want to think about having to euthanize him if I absolutely don't have to.
Has anyone else had something like this happen? :3 Any recommendations on what to do?