mine are now getting to that size where they are easier to sex. post some pics of your male and female firemouths, to give some ideas, mainly the females. One of mine is about 3 inches and is beginning to look like a male with his dorsal fin beginning to taper into a longer point, and my other on, im not sure, on. It does not have a long pont, its fin point is about at a 90 degree angle. So pics of males and females please. ill post pics later.