If you could answer some of these questions, it will help :)
What size is your tank? 4 gallon
What temperature is your tank? not sure. ( im going to go to store and get a heater and thermometer)
Does your tank have a filter? no
Does your tank have an air stone or other type of aeration? Airstone
Is your tank heated? No (soon)
What tank mates does your betta fish live with? only the betta
What type of food do you feed your betta fish? aqueon betta food
How often do you feed your betta fish? 1-2 times a day
How often do you perform a water change? Tank is only 3 days old.
What percentage of the water do you change when you perform a water change?
What type of additives do you add to the water when you perform a water change?
Have you tested your water? If so, what are the following parameters?
Ammonia: Going to get a test kit.
Symptoms and Treatment
How has your betta fish's appearance changed? white fuzz and tail fray
How has your betta fish's behavior changed? stays at top mostly
When did you start noticing the symptoms? next morning
Have you started treating your fish? If so, how?
Does your fish have any history of being ill?
How old is your fish (approximately)? 36 hours
here is a picture best i could get with my phone
his two front fin strings (not sure what to call them) has turned a whiteish color. and has a little fuzz on him