Please help me figure out what is wrong with my betta, Nikola. He is wasting away before my eyes and I can't stand to see him suffer. I have tried everything. Thank you for looking at this!
Symptoms and Treatment
How has your betta fish's appearance changed? Please look at the pictures I attached. The one with the plastic plant was taken about a year ago, when he was in a 2 gallon tank. He has always had a bump/protrusion on his side (you can see it better in the second picture). I always thought he had a crooked spine.
How has your betta fish's behavior changed? He is lethargic, weak, pale, and will not eat. He attempted to eat about a week ago, but he spit the food out. He has not attempted to eat since.
When did you start noticing the symptoms? He developed fin rot in August. I successfully treated the fin rot with saltwater baths and water changes but although the fin rot is gone, he is still very ill.
Have you started treating your fish? If so, how? Before he got sick, I planned to move him into a 25 gallon tank that I was getting ready to turn into a community tank. When the fin rot stopped, he was still ill but I went ahead and moved him into the new tank, hoping the size/better filtration/aeration would help.
Does your fish have any history of being ill? He had once before this year. I was out of town and my mom treated him with water changes and Melafix.
How old is your fish (approximately)? Not sure. I purchased him at a Walmart almost 2 years ago. He has always been very small for a betta, so when I purchased him I thought that he might be somewhat young, but he hasn't grown.
What size is your tank? 2 gallon for 1.5 years, 25 gallon planted tank as of August.
What temperature is your tank? 75 F
Does your tank have a filter? Yes, but he is so weak he gets stuck to the intake vent. I had to shut it off.
Does your tank have an air stone or other type of aeration? Yes.
What tank mates does your betta fish live with? None, I want to turn this into a community tank if he recovers.
What type of food do you feed your betta fish? Betta Min Tropical Medley flakes, sometimes blood worms.
How often do you feed your betta fish? Once a day, when he was eating
How often do you perform a water change? In the small tank, 50%/week. In the large tank 25%/week
What type of additives do you add to the water when you perform a water change? Water conditioner
Have you tested your water? If so, what are the following parameters?
Ammonia: I don't have an ammonia test kit at the moment
Nitrite: 0 ppm
Nitrate: 0 ppm (he isn't producing any waste)
These have always been the water parameters in my area, the numbers are all stable, and I use the same water conditioner as I always have.