I just found out tonight while getting ready to bed that my fish's fin got teared ! He was fine when I changed the water this afternoon. I didn't know what was happening. So I'm just going to go ahead and answer these questions
What size is your tank? 5 gal
What temperature is your tank? 80
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? no tank mate
What type of food do you feed your betta fish? Pellets, flakes, bloodworms, shrimps
How often do you feed your betta fish? twice a day
How often do you perform a water change? twice a week
What percentage of the water do you change when you perform a water change? 50%
What type of additives do you add to the water when you perform a water change? 1 mL of Tetra Plus, 1 mL of Stress Coat
Have you tested your water? If so, what are the following parameters?
Symptoms and Treatment
How has your betta fish's appearance changed? Fin got teared
How has your betta fish's behavior changed? He seemed normal
When did you start noticing the symptoms? Just now
Have you started treating your fish? If so, how? I put 1 teaspoon and a half of Bettafix in the water. I've never used this before because I've got him for a month only
Does your fish have any history of being ill?
How old is your fish (approximately)?
I don't know what might cause the problem. I put the same decorations in the tank after the water changes. He likes to sleep on the filter. Would that be the problem??