So for the past couple days I've been scouring the internet like crazy, trying to figure out what's going on with my female betta, Nina. I just got her a couple weeks ago and she looked very healthy when I got her (unlike a lot of the other poor guys) and she was up until a few days ago.
I'm keeping her in a 2.5 gallon tank, unfiltered & uncycled (too small for either of those), and with a heater.
The first night I noticed something was off, she had a slight s-curve to her spine and her body kept wanting to tilt to the side. She wasn't very bloated (she'd only been getting one pellet a day; she's tinier than my other fish have been), but it looked like SBD, so I treated it as such and gave her an epsom salt bath. The next morning, she looked fine again, but I fasted her for a day or two and gave her a pea. She pooped within 12ish hours. But then the next night, she was acting the same. Slight s-curve, wanting to float on side. But she seemed frustrated about this and started leaning against the side of her tank to keep herself upright. I wasn't sure what to do, so I gave her another epsom salt bath and--once again--she was fine the next morning! But this is the third night it's returned, and I've gathered a couple possibilities. Either it's a parasite (but no white spots & it doesn't look like velvet) or it could possibly ammonia/nitrite poisoning? I'm doubtful about the ammonia or nitrite poisoning because I've been changing her water twice a week, once 50% and once 100%, and the past couple nights I gave it 100% change after the epsom salt baths, thinking if it was ammonia or nitrite, new water would be good since I have no filter.
I gave her another epsom salt bath tonight (she seems to handle them well) but I don't think it did much this time. She's a little bloated this time, and I'm sitting by her as I type this and I just noticed (this didn't happen the other two nights) she has some white poop hanging from her? But it's not super stringy. Isn't white poop normally a sign of internal parasites, and if so, what would I treat them with?
In the morning--as long as the weather allows it--I'm going to get a water testing kit (the API one) and some coppersafe (in case it is parasites, just to be prepared.)
So basically I'm wondering what's wrong with little Nina, sorry for the novel of a post.