My betta, Vincent, isn't looking so good these days. I've had him for over two years, and i would guess that he's about 3 years old. He has developed a large grey patch on his anal fin that his one or two pin sized holes in it. He has a large bulge behind his pectoral fins. I can't tell if it's his belly that is bloated or something else =/. This has been going on for the past 2 months i believe. He seems to be getting a bit thin aswell. However, he's acting like he feels fine. He eats like a pig and he's pretty active. Could this just be old age, or something else?? I'll attempt to post a picture at the bottom of this post.
Housing
What size is your tank? 2.5 gallons
What temperature is your tank? high seventies
Does your tank have a filter? yes
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? no tank mates
Food
What type of food do you feed your betta fish? Top Fin Color Enhancing Betta bits, and Freeze Dried Blood Worms.
How often do you feed your betta fish? 3-4 pellets 6 days a week, and 3 blood worms once a week.
Maintenance
How often do you perform a water change? about 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
Water Parameters:
Have you tested your water? If so, what are the following parameters?
Ammonia:N/A
Nitrite: N/A
Nitrate: N/A
pH:
Hardness:
Alkalinity:
Symptoms and Treatment
How has your betta fish's appearance changed? bulge of some sort behind his pectoral fins, large grey patch on his anal fin, looking a bit thin, and his colors seem dull.
How has your betta fish's behavior changed? No changes in behavior
When did you start noticing the symptoms? About two months ago, maybe even a little before that.
Have you started treating your fish? I haven't.
Does your fish have any history of being ill? Nope, he's never been sick actually O_O.
How old is your fish (approximately)? I think he's about 3 years old.
I hope this picture shows up, it's the best one i have. He hates the camera, so he's extremely difficult to photograph

. This picture is from about a month ago. you can see the grey patch on his anal fin, and the bulge behind his pectorals. His colors are duller now and he's looking thinner than he does in this picture.