Comet has tattered fins but is eating well... I think it's fin rot. Here's the info and a pic.
What size is your tank? 2 gallon Aqua Scene Desktop Aquarium
What temperature is your tank? 79-80 degrees (cant tell with my tiny thermometer :3)
Does your tank have a filter? It has an airstone.
Does your tank have an air stone or other type of aeration? Yes
Is your tank heated? No, but it has a light which keeps it warm.
What tank mates does your betta fish live with? None.
What type of food do you feed your betta fish? Top Fin Color Enhancing Betta Bits.
How often do you feed your betta fish? 4 pellets, two in the morning and two at night. (fasting once a week, and an extra bloodworms on tank cleaning days.)
How often do you perform a water change? Once a week.
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? Top Fin Betta Water Conditioner.
Have you tested your water? No
Symptoms and Treatment
How has your betta fish's appearance changed? Ends of fins look tattered/ripped
How has your betta fish's behavior changed? Nope, he still swims/eats/poops/flares at me when I come by.
When did you start noticing the symptoms? Today
Have you started treating your fish? If so, how?
Does your fish have any history of being ill? Nope.
How old is your fish (approximately)? 1/17/11-Current. (thats when I bought him o.O)