Here is more information, you guys:
What size is your tank? 1 gallon
What temperature is your tank? 80 degrees
Does your tank have a filter? No
Does your tank have an air stone or other type of aeration? No
Is your tank heated? No. It is really warm where I live.
What tank mates does your betta fish live with? None.
What type of food do you feed your betta fish? Aqueon Betta Pellets
How often do you feed your betta fish? Twice a day. 3-4 pellets in the morning and 4 at night.
How often do you perform a water change? I try for everyday. 100% one day, 50% the next day, 100% next day...etc.
What percentage of the water do you change when you perform a water change? 100% one day, 50% the next day, 100% next day...etc.
What type of additives do you add to the water when you perform a water change? Seachem Prime, but I bought a medicine dropper to put two drops per gallon. Is this okay??
Have you tested your water? If so, what are the following parameters?
Ammonia:(I don't have a liquid test kit right now. Whenever I try the strips, they are either yellow or light green for the ammonia one..but I don't understand because I am using the Seachem Prime. I mean, now I use 2 drops from a medicine dropper, but maybe it is not enough??)
Symptoms and Treatment
How has your betta fish's appearance changed? His top fins are really worn down; There is a hole in his tail fin; I'm worried that now one of his lower fins look like they have a red spot; the scales on his body are losing their color. It is spreading on his body, and it is getting near his eye now.
How has your betta fish's behavior changed? He is terrified of me. He was okay with me until I had to leave the house for a while, and I asked a friend to take care of my betta fish. When I came back, my betta fish has been freaking out everytime I try to feed him. He attacks the food and then swims really fast around the tank.
When did you start noticing the symptoms? When I took him to my real home. Maybe it was too warm there? It was like 86 degrees sometimes, which I thought was normal...
Have you started treating your fish? If so, how? I tried salt baths, and now I tried Maracyn 2.
Does your fish have any history of being ill? No. His fins got a little shredded once because he had plastic plants, but I switched him to silk plants.
How old is your fish (approximately)?I've had him for about 5 months now, so I am not sure...