Hi everyone. I honestly don't know what else I can do to help my betta. I have had him for about a year. I keep him in a 1 gallon tank with a bubbler at a consistent 77 degrees F. I do a 50-75% water change every 3 weeks or so. I do a complete water change and tank cleaning every month.
He has always been fine and was at one time a bright blue color. About a month ago (with no changes in my care procedures), he just lays at the bottom of the tank, barely swimming at all. He has also turned a brownish color on his body and slowly his fins (see image below). It's almost like there is a coat of brown on him now, as I can see some shiny blue under it at certain angles. His scales seem to be deteriorating, as well. I have tried a bunch of things. I have tried calibrating the water temperature (it's right at 77 degrees), I have tried feeding him less, I have tried changing the water more frequently. Nothing seems to get him back to his blue color and swimming eccentrically as he used to. Nothing is working.
What can I do and what can be causing this? Any help would be appreciated. I hate seeing him like this.
What size is your tank? 1 gallon
What temperature is your tank? 77 degrees
Does your tank have a filter? no, but a bubbler
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? Top Fin betta bits and tetra bloodworms
How often do you feed your betta fish? used to feed him twice a day (3 pellets, 3 bloodworms). Now I feed him 3 pellets as he is sick.
How often do you perform a water change? see above
What percentage of the water do you change when you perform a water change? see above
What type of additives do you add to the water when you perform a water change? chlorine removal drops