Hi all, I have 2 Borellii Opals I am uncertain of their sex. When I bought them I was certain they were females due to the strong black colours on the first rays in the dorsal and pelvic fins and a seemingly strong yellow colour (however they were in a tank with possibly 30-40 other Borellii opals at the time) I have got them home and I am now not certain. I have a young male who already has some nice colour and long Dorsal and ventral fins, but have had a hard time picking out a couple of females for a small harem. Thanks in advance for any help. The first photo I think is most likely to be a female but I have no idea about the second anymore giving some blue colour showing in the ventral fin in the correct lighting.