I'm not exactly sure what's wrong with my male betta fish, Thunder. I have been super busy with things going on in my life, so I haven't been doing regular water changes to my 2.5 gallon tank. Sometimes there's green algae in the tank so I'll do a 100% water change. I know this is bad, but I just haven't had the time for water changes and no one else can do it but me.
Thunder has had a protrusion on his side for nearly a year now. I posted a forum with a picture and some people told me it may be a tumor. Regardless, he has lived with it for a year now (he's over two years old). Lately though, with my lack of water changes, I've noticed that he's become lethargic and will lie on his side on the bottom of the tank. I also noticed that sometimes he'll either have these cottony patches on his head or white dots. Naturally, I believed it was a fungal infection, but then the white dots look like Ick. However, he hasn't been scratching or rubbing himself on anything and he's still very hungry.
I'm not sure how to treat him because I'm not sure if he has one or both. Sometimes the dots even disappear and then I'll see the cottony patches instead. In addition, he has clamped fins/fin rot, and I've noticed that he's gotten quite thin on the top of his head.
Apart from more water changes (now I'm more on top of it), what sort of treatment should I perform?
I have posted pictures so you can see what I'm talking about. I've labelled all the different physical changes I've noticed.
What size is your tank? 2.5 gallon
What temperature is your tank?
Does your tank have a filter? Yes
Does your tank have an air stone or other type of aeration? No
Is your tank heated? No
What tank mates does your betta fish live with? None
What type of food do you feed your betta fish? Pellets
How often do you feed your betta fish? Usually every day, but he'll fast about once every 2 weeks.
How often do you perform a water change? Lately, I've been really bad with them. About once every 2 weeks and filtering about 2 times within that time.
What percentage of the water do you change when you perform a water change? 100% since the water is bad
What type of additives do you add to the water when you perform a water change? Prime conditioner
Symptoms and Treatment
How has your betta fish's appearance changed? clamped fins, fin rot, and he's become very skinning around his head
How has your betta fish's behavior changed? lays on his side in the bottom of the tank
When did you start noticing the symptoms? The "tumor" a year ago; the patches on his head about three weeks ago
Have you started treating your fish? If so, how? I tried bettafix but it's not working so i stopped
Does your fish have any history of being ill? Fin rot. He's also had the protrusion on his side for nearly a year
How old is your fish (approximately)? Over 2 years