I may be jumping to conclusions but Jaju's acting a bit strangely. Usually he comes right up for food, but he was in a deep sleep at the bottom of the tank, almost on his side (even though he's always slept in funny positions) so now I'm worried.
What size is your tank? 1.5 gallons
What temperature is your tank? 73ish F if the new thermometer is right (he's never had a heated tank before though and has always been fine and active)
Does your tank have a filter? No (moves the water too much for him)
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? No
What type of food do you feed your betta fish? Hikari Betta-Bio-Gold
How often do you feed your betta fish? Once a day
How often do you perform a water change? Once a week usually
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? Water conditioner
Haven't tested the water.
Symptoms and Treatment
How has your betta fish's appearance changed?
He looks paler and almost greyish around his mouth. Not cottony or anything, just greyish, though it looks better in some lights than others... so i'm not confident at my ability to pick out symptoms based off of appearance...
How has your betta fish's behavior changed?
Hanging out at the bottom of the tank, sometimes almost on his side (though he is known for being in funny positions) He didn't come up for food like he usually does, though I do think he ate a pellet or two when I went to get my computer. When he's not at the bottom, he's just completely still, lingering around the top, and doesn't seem to care about food or interacting like usual. Though I see his eye move so I know he notices me.
When did you start noticing the symptoms? This morning, though I thought he was acting more lethargic last night.
Have you started treating your fish? If so, how?
No, I'm worried to start treatment ignorantly and making it worse. I do have Quick-cure on hand and am going to see if someone can drive me to petco to get aquarium salts if need be.
Does your fish have any history of being ill?
No, except for occasionally getting fat. He still looks a little round, but not horribly so.
How old is your fish (approximately)?
1.5 - 2 years
I don't think he looks too different, mostly just acting funny. He's under his light in this picture.