What size is your tank? 10 gal
What temperature is your tank? 76 degrees
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? Fiddler Crab
What type of food do you feed your betta fish? Betta Pellets, Flakes and occasional bloodworms
How often do you feed your betta fish? Twice a day
How often do you perform a water change? Weekly
What percentage of the water do you change when you perform a water change? 35%
What type of additives do you add to the water when you perform a water change? Conditioner
Have you tested your water? If so, what are the following parameters? N/A
Symptoms and Treatment
How has your betta fish's appearance changed? He has a little blister looking thing above one of his gills. Fin rot is in place but being healed
How has your betta fish's behavior changed? Stays towards the top of the tank more.
When did you start noticing the symptoms? 2 days ago, or Yeasterday
Have you started treating your fish? If so, how? No, I don't know how.
Does your fish have any history of being ill? Fin Rot from walmart.
How old is your fish (approximately)? Not a clue, he is fully grown, walmart rescue.
I think it might be Ich but I'm not sure myself. He's had fin rot since I got him, not treating it with any medicines, but I am keeping him in a healthy stress free environment, or hope I am.
If anybody thinks it's the Fiddler crab attacking him, I won't say it's not happening I do think it isn't very likely. The fiddler crab fears Delta, so he stays ~5 inches away at all times, when I put them to bed, the crab crawls on either the heater or the filter intake part, while Delta sleeps in his house decor.