Hi, this is my first post on here so I'm sorry if I don't do something right. My friend recently got a betta fish from Walmart (I know, I know, I had no say in the matter). He bought it because it was pitifully sick looking and near dead; he hoped that I could help him fix it's problem since I own 3 happy bettas and many other fish. It had been sick from the moment he chose it out. I set him up with a basic 10 gallon aquarium, cycled and ready, and the fish is much happier. It is set at 80 degrees. Ammonia at 0, Nitrite is at 0, and pH=6.5. The fish exhibits the classic signs of Swim Bladder Disorder, such as resting sideways, not being able to reach the bottom of his tank, and generally having buoyancy issues. The odd thing is that his stomach is not visibly distended in any way. His swim bladder is curved out in the s-shape, though. His colors seem to be vivid and his tail and fins are both normal. We embarked on a 4-day fast followed by the feeding of a pea. It's been two days and the poor little guy has been getting slightly better but he has passed no feces. He seems to be more active and is extremely feisty and ate the pea gladly, but he's still obviously struggling. My friend is devastated and afraid to lose him. I've never encountered this problem with ANY of my bettas so I'm a bit in the dark, though I've done heavy research. If anyone has advice for me, I would truly appreciate it My friend and I are both desperate to save the little guy. Summary: My friend's betta fish is exhibiting signs of swim bladder disorder and constipation except swelling of the stomach. The fast/pea treatment did nothing.