What size is your tank? 2.5 gal
What temperature is your tank? ~ 80
Does your tank have a filter? No
What type of food do you feed your betta fish? Spectrum pellets and occasionally worms
How often do you feed your betta fish? Daily, 3 pellets
How often do you perform a water change? twice a week, 100%
What type of additives do you add to the water when you perform a water change? Conditioner and a drop of prime
Have you tested your water? If so, what are the following parameters?
No and N/A
Symptoms and Treatment
How has your betta fish's appearance changed? His tail went from a beautiful fan to shredded in what appears to be two days?! His gills are a bit whiter than normal. His fins are all fine except for the back one, which now looks like a crowntail.
How has your betta fish's behavior changed? It hasn't changed, just appearance.
When did you start noticing the symptoms? Just now during a water change
Have you started treating your fish? If so, how? Not started
Does your fish have any history of being ill? No
How old is your fish (approximately)? About 8 months?
This is what he looks like today...
And before (ignore the bloating, it was from a water issue I've resolved)