Marty, our betta, is now sporting something of a fish pot belly nowadays. I'm not sure if it's the sign of something like dropsy (which I don't think so, because his scales are still flat against his body) or if it's because I'm overfeeding the little pig (twice a day, sometimes more when he's dancing against the glass). Is it normal for bettas to get a little poonchy around the midsection? Let me know.