What does it mean when my betas belly makes him look pregnant? My betas have always had a nice belly, but Poseidon looks PREGNANT! Should I fast him? I only have has him 4 about 3 days. I've only fed him 3 pellets a day!
He could be constipated or is finding something else to eat in addition to what you're feeding him. Most likely constipation though unless he has tank mates like shrimp or snails that he's munching on or their food.