Stress stripes??

Housing:
How many gallons is your tank? 6 gallon
Does it have a filter? yes
Does it have a heater? yes
What temperature is your tank? 80 degrees
Does your tank have an air stone or other type of aeration? sponge filter
Does your Betta have tank mates? What kind? 2 amano shrimp

Food:
What food brand do you use? omega one betta pellets
Do you feed flakes or pellets? pellets
Freeze-dried?no
How often do you feed your Betta? How much? have not fed yet bc of bloat

Maintenance:
Before your Betta became ill how often did you perform a water change? N/A
What percentage of water did you change? N/A
What is the source of your water? tap
Do you vacuum the substrate or just dip out water?
vaccum
What additives do you use other than conditioner?N/A
What brand of conditioner? seachem prime

Water Parameters:
What are your water parameters? Please give exact numbers. If tested by pet store please get exact numbers. "Fine" or "Safe" won't help us help you. Important: Test your water before the regular water change; not after one.

Ammonia: 0
Nitrite: 0
Nitrate: below 5ppm
pH:7
Hardness (GH):180ppm
Alkalinity (KH):120ppm

Symptoms and Treatment:
When did you first notice the symptoms? just now
How has your Betta’s appearance changed? swollen abdomen/stress stripes
How has your Betta’s behavior changed? active, curious and swimming well
Is your Betta still eating? not sure
Have you started treating your Betta? If so, how? fasting bc of bloat/swelling of abdomen
Does your Betta have any history of being ill? N/A
How long have you owned your Betta? 2 days
Was he or she ill or suffering some sort of damage when purchased yes