Cory

dunno if its a female or male? its the bigger of the two had em roughly 2 months now

Well if its bigger then the rest your chances are good that its a female. I have one that grew considerably bigger then the other 3 and i was wondering the same thing. Then one day I did a big water change and all 3 of the smaller cories were crawling,rubbing, doing everything to attract the bigger ones attention. Soon after eggs appeared on my tank walls. Wonder who laid 'em
But then again, one of my males look like that one, with a pearly white stomach, but the other cories dont have that brighter colour underneath. But who knows...

Good luck