Sorry, I might be missing something, I am not seeing any pictures. Also please fill out the sticky below as detail as you can.....
What size is your tank? 5 gallon
What temperature is your tank? around 75 degrees
Does your tank have a filter? yes
Does your tank have an air stone or other type of aeration? I'm not sure. We just have a filter that looks a lot like this:http://source-www.petco.com/assets/p...905060806B.jpg
Is your tank heated? yes
What tank mates does your betta fish live with? he's all alone
What type of food do you feed your betta fish? originally pellets, switched to flakes
How often do you feed your betta fish? 2x a day, small meals
How often do you perform a water change? weekly
What percentage of the water do you change when you perform a water change? 20% (1 gallon)
What type of additives do you add to the water when you perform a water change? Seacham Prime (Previously a Top Fin conditioner but were informed this is better)
Have you tested your water? If so, what are the following parameters?
The only one I know is Ammonia, it was high before but ok now
Symptoms and Treatment
How has your betta fish's appearance changed? see attached picture. also had frayed fins.
How has your betta fish's behavior changed? he's way more docile and hangs out at bottom of tank, loss of appetite.
When did you start noticing the symptoms? about a week ago
Have you started treating your fish? If so, how? Yes. Bettafix and Mellafix
Does your fish have any history of being ill? no
How old is your fish (approximately)? We just got him from Petsmart like 5 months ago