Rosy barb with swollen belly

[Sailor Starlight]

Hello! I recently purchased a few Rosy Barbs from Petsmart 3 days ago, and I didn't really notice until I got them into the tank, but one of the barbs has a pretty large belly compared to the other barbs. These were supposed to be all male, coming from an all male tank, but now I'm not so sure of the gender of this fish. I did think it was pregnant at first, but knowing that barbs do not give live birth, I don't think it's particularly normal for this species to sport big tummies. My question is; does this fish just look over fed? Or do you think this is the beginning of Dropsy? I haven't noticed any pin-coin scales on this fish, and they eat regularly and don't act like they are ill. I've only had this fish for a few days, so course it's hard to tell if this is going to be a long lasting issue, but I am still worried...

[Up2somthinfishy]

Hello! I recently purchased a few Rosy Barbs from Petsmart 3 days ago, and I didn't really notice until I got them into the tank, but one of the barbs has a pretty large belly compared to the other barbs. These were supposed to be all male, coming from an all male tank, but now I'm not so sure of the gender of this fish. I did think it was pregnant at first, but knowing that barbs do not give live birth, I don't think it's particularly normal for this species to sport big tummies. My question is; does this fish just look over fed? Or do you think this is the beginning of Dropsy? I haven't noticed any pin-coin scales on this fish, and they eat regularly and don't act like they are ill. I've only had this fish for a few days, so course it's hard to tell if this is going to be a long lasting issue, but I am still worried...

I have the same thing with my rosy barb