I might just be being paranoid, since I do this, but Sprinkles had pretty much stopped moving and just floats head down from place to place. He somehow eats like this, I think, because his food is gone if I come back to check after about 5 minutes, so it's not being swept out the sides by the filter. His tankmate is fine, but I'm worried mostly about his suffering and me not knowing. I really do not want him to be in pain or anything. How do I know if he is in pain, there's not much I can do for him. There are pictures at the bottom.
What size is your tank? 10 gallon split
What temperature is your tank? 78ish
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? Another betta
What type of food do you feed your betta fish? Hikari Betta Bio Gold, the baby pellets
How often do you feed your betta fish? 2x per day 1-2 pellets. Skip every couple days
How often do you perform a water change?1x week
What percentage of the water do you change when you perform a water change? <25%
What type of additives do you add to the water when you perform a water change? Prime and API Stresscoat. (His Neighbor has a tail biting problem)
Have you tested your water? If so, what are the following parameters?
Ammonia: .25-.5 just tested today
Symptoms and Treatment
How has your betta fish's appearance changed?
How has your betta fish's behavior changed? Stays floating in a sort of curve shape. He doesn't greet me when I feed him anymore and just sort of flails when I try to net him, he doesn't seem to swim in an organized, normal way anymore.
When did you start noticing the symptoms?about 2-3 days ago
Have you started treating your fish? If so, how? No
Does your fish have any history of being ill? Yes, he has a prior head injury that knocked something about him off. This happened in October, but he has been just as active as the other 3 until about 2 days ago.
How old is your fish (approximately)?More than 8 months