What size is your tank? - 1g
What temperature is your tank? - room temperature
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
What tank mates does your betta fish live with? - none
What type of food do you feed your betta fish? - pellets
How often do you feed your betta fish? - once daily
How often do you perform a water change? - Weekly
What percentage of the water do you change when you perform a water change? - 100%
What type of additives do you add to the water when you perform a water change? - Stress coat
Water Parameters: This sounds naughty, but I have never tested water parameters for small tanks...
Symptoms and Treatment
How has your betta fish's appearance changed? - large red spot on the side of his body
How has your betta fish's behavior changed? - lethargic, stays on the bottom of the tank, it looks like he's struggling to stay upright as well, he seems to be using his fins to balance himself on the bottom of the tank. He has stopped eating.
When did you start noticing the symptoms? - 2 days since noticing the behaviour, a few minutes since noticing the red spot
Have you started treating your fish? If so, how? - I have no idea how to treat him
Does your fish have any history of being ill? - none
How old is your fish (approximately)? - 1 year
Chartreuse has been in an unheated tank since I had him, he's been perfectly fine, no particular problems aside from tail biting... until very recently. I had 2 other bettas dying of the same symptoms as I have been neglecting them due to a relationship issue. From previous researches, it looks like bacteria infection... but I have no idea how to treat him, help please?
Also, if it is in fact bacteria infection, what am I to do with the tanks that housed the fishes that died of it? Can i reuse anything from that tank?