Pretty Boy started growing the lump about 3 months ago. I've tried every treatment imaginable--parasites, bacterial treatments, etc.--but it never shrinks, only grows. No seepage or drainage from the lump. He was acting normal until yesterday, when he started floating oddly and gasping a bit. I've moved him to a hospital tank and started epsom salts again.
Photo below. The lump emerges from between the scales, is not regular but generally round-shaped. No behavior changes until today.
What size is your tank? 2.5gal
What temperature is your tank? 75-78°
Does your tank have a filter? no
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? none
What type of food do you feed your betta fish? Omega pellets
How often do you feed your betta fish? once daily, 4-6 pellets
How often do you perform a water change? 100% once a week, have java moss in all tanks, it's great!
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? water conditioner + 1/8th tsp AQ salt
Have you tested your water? If so, what are the following parameters? NA
Symptoms and Treatment
How has your betta fish's appearance changed? lump growing on head
How has your betta fish's behavior changed? floating oddly, gasping a bit, eating sporadically
When did you start noticing the symptoms? 3 months ago
Have you started treating your fish? If so, how? Yes, see above
Does your fish have any history of being ill? no
How old is your fish (approximately)? 1-1.5 years
Ideas? Anyone? Photo below, I apologize for the quality.