Housing
What size is your tank? 1.5 gallons
What temperature is your tank? 78 F
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
Food
What type of food do you feed your betta fish? flakes
How often do you feed your betta fish? once or twice a day
Maintenance
How often do you perform a water change? Every 3-5 days
What percentage of the water do you change when you perform a water change? Usually 100%
What type of additives do you add to the water when you perform a water change? Dechlorinater
Water Parameters:
Have you tested your water? If so, what are the following parameters?
Ammonia: Didn't test
Nitrite: Didn't test
Nitrate: Didn't test
pH: 6.5
Hardness:Didn't test
Alkalinity: Didn't test
Symptoms and Treatment
How has your betta fish's appearance changed? No change
How has your betta fish's behavior changed? Less active, keeps his mouth open when he's resting
When did you start noticing the symptoms? A few days ago
Have you started treating your fish? If so, how? No
Does your fish have any history of being ill? He's had problems with bloating a couple times, nothing else that I can remember
How old is your fish (approximately)? I don't know, but I've had him almost exactly a year and he was already full-grown then
About a week ago, Excalibur spent a whole night hiding inside a decoration in his tank. When I fed him and he didn't come out the next morning, I was worried he'd gotten stuck and gently removed the decoration. At the time he seemed dazed for a few minutes, but then he was acting normally and eating. Earlier this week, he suddenly became less active. Sometimes he'll act completely normal, but other times he'll rest for hours at a time and doesn't even notice right away when I feed him. He also sometimes rests with his mouth wide open, which isn't something he used to do. My mother is wondering if what happened last week could have damaged his brain. Is that a possibility? I'm also wondering if these are signs of old age, but the changes happened pretty suddenly. Another possibility I thought of is that it's something wrong with the water, because it's been developing film on top, but I'm pretty sure it's just protein film, and it didn't seem to be bothering him earlier. Does anyone know what the problem is ? I'm really worried about him.