As stated in the title, I think my fish has a fungus growing on him but I'm not entirely sure. I don't want to treat him for the wrong problem.
It's too dark to take a photo right now and he's hiding on the far side of his tank but I'll try to get a few pictures tomorrow when the lighting is better.
I don't think it's ich; the white patches are complete scales, not little salt-sized sprinkles.
What size is your tank? 2 gallons
What temperature is your tank? 78F right now
Does your tank have a filter? no
Does your tank have an air stone or other type of aeration? no
Is your tank heated? yes
What tank mates does your betta fish live with? none
What type of food do you feed your betta fish? Wardley advanced nutrition perfect protein betta pellets
How often do you feed your betta fish? used to be once a day, four to five pellets, but I've switched to twice a day, 2-3 pellets each time
How often do you perform a water change? once a week; unfortunately I've forgotten to keep this up as well as I should this semester since school has been awful.
What percentage of the water do you change when you perform a water change? 100%
What type of additives do you add to the water when you perform a water change? Seachem Prime
Have you tested your water? If so, what are the following parameters?
No, I can't find my test strips.
Symptoms and Treatment
How has your betta fish's appearance changed? his coloring is pale and some of his scales have turned a much lighter shade of grey, almost an off-white. His fins are also lighter, sort of cloudy-looking, but there doesn't seem to be any rotting. He isn't bloated and his scales still look flat. It's a black fish in a tank with black gravel so it's hard to tell HOW flat, but they're not horribly pineconed. In the daytime, when the light is better and when I stare at him, I noticed a bit of clear, slightly-fuzzy-slightly-slimy stuff coming off his body. It's not a huge dime-sized piece of fuzz, more like a sprinkle-sized boogery thing floating near his dorsal fin. There's another small bit hanging from the very end of his tail. I'm confused because it doesn't look like pictures I've found online of fungus on fish.
How has your betta fish's behavior changed? generally listless, spends most of his time sitting on his (fake) plant near the surface of the tank or hiding underneath the plant. He still eats all of his food but he's less enthusiastic about it. He swims around his tank occasionally but it's very slowly and only for a short time. Keeps his fins closed. Won't flare at anything.
When did you start noticing the symptoms? earlier this week, shortly before cleaning his tank
Have you started treating your fish? If so, how? no; I'm not sure what to do
Does your fish have any history of being ill? no
How old is your fish (approximately)? around 2 years. I got him from a fish store March 2010.
I'm almost positive that part of the problem is my cat; he has started aggressively pestering the fish, sitting on the small sliver of counter and pawing at the tank. The top of the tank is taped down to keep the cat from getting in there, but I'm sure it's still scary for Keanu. His behavior was still fairly normal, slowly swimming around his tank and getting excited when it was time to eat. I live in a small apartment and have no other space to put the fish; we're looking for a house for the spring and in the meantime I'm trying to keep the cat from getting on the counter, but he's being a little prick about it.
There was a bad incident earlier this week which I've NEVER had to deal with in the seven months that I've had this cat: I was cleaning the tank (shortly after noticing Keanu's weird scales) and placed him in a 2-cup Pyrex measuring cup. I covered the cup, as always, and put it on the counter. By the time I finished cleaning the tank and went to the kitchen to put it on the counter the cat had pulled the towel off of the cup and was pawing at the fish, and had apparently spilled most of the water on the counter. Keanu must have been in shock; he wasn't moving his fins at all and just sat there, doing a slow, creepy barrel roll. His coloring was very gray instead of his normal lovely black and blue. I swatted the cat (have since invested in a spray bottle that only comes out when he goes for the counter) and took care of Keanu as best I could, putting him back in his tank (removing as much of the hairy water in the cup as I could) and keeping it dark and warm for the rest of the day. For the rest of that day he stayed at the bottom of the tank, not moving for anything, but he's been a little better since then.
I haven't found my test strips but I've noticed that the water at this apartment is worse than when I lived with my parents. It tends to leave a bit of crust as it evaporates from the tank, and every time I use the dishwasher the clean dishes are horribly spotty so I'm guessing hardness is a problem. Could this be hurting my fish? I was under the impression that the water conditioner would help with this, but I'm not sure.
Tomorrow I'll clean his tank again and I think I'll try boiling the decorations and gravel, just to be sure they're totally clean. I'll also shut Barkley in a separate room, which will be part of the updated fish cleaning ritual. If I can find my test strips I'll add that information as well. I don't have any aquarium salt and I don't understand how to use epsom salt. I don't want to hurt him by trying to make him better without understanding the methods and reasoning behind what I'm doing.