New to fishlore and have some questions about my Albino Cory Catfish. The tank is 15 gallons. With 3 Albino corys and one neon blue dwarf gourami. PH 7, KH 80, GH 120, Niteite 0, Nitrate 20 and temperature 75. All the fish look happy and healthy but my one Albino Cory is very large and in charge! Her coloring (I am assuming it is a her due to her size and other sexing attributes I've read about) is normal, barbs are healthy, acts like all the other fish and has a hardy appetite but her stomach is very large and round. I've attached photos that hopefully show how large she is. The other two look the same as when they entered the tank (2 months ago). We have added peas to their diet to encourage a healthy diet and not have constipation. Would love any feed back on why she is so large? Is she just a fatty or is something wrong?