Cherry barb-strange shape

[RackinRocky]

My male Cherry barb has a "tuck" that my females don't have in his abdomen. I've had other males before, and none looked like this. He is active, eating, and acts healthy. (He's a baby, by the way). Here's a pic. Is this normal?

 

[ImACoolguy]

Maybe just skinny if he's still a juvenile


Caleb

 

[RackinRocky]

I hope so. He seems to be doing well. Thanks!