What size is your tank? 3 gallons
What temperature is your tank? 78-82 degrees
Does your tank have a filter? Yes
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? Omega one pellets
How often do you feed your betta fish? 2 pellets twice a day (two in the morning, two at night)
How often do you perform a water change? 1 50% weekly
What percentage of the water do you change when you perform a water change? About 50%
What type of additives do you add to the water when you perform a water change? Jungle water conditioner
Have you tested your water? If so, what are the following parameters? I haven't tested my water yet
Symptoms and Treatment
How has your betta fish's appearance changed? It hasn't, aside from recovering from a minor case of finrot I treated earlier this week.
How has your betta fish's behavior changed? He just stays floating in the top left corner of his tank completely clamped up for 10-20 minutes at a time, and doesn't move at all, or he'll stay in the same position under one of his fake plants in the bottom left corner. When in the top left corner he usually floats in a straight up and down position and looks dead.
When did you start noticing the symptoms? Yesterday.
Have you started treating your fish? If so, how? No, I have no idea of what's wrong. He has no bloating, still can swim fine, and all that so I wouldn't know what to treat him for.
Does your fish have any history of being ill? Yes, a minor case of finrot that I treated him for last week.
How old is your fish (approximately)? Anywhere from 10 months to a year and a half.
I don't know what in the world this is. He only started acting like this after I added in the tank heater, and even then I tested the heater for 5 days before adding him back in from the sick tank while treating him for fin rot. I don't think it's Swim Bladder Disorder, but I don't know. Please help!