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.
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Help sexing Borellii Opal’s
- Thread starter Dkelly97
- Start date
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- 11,220
- Location
- Denver, Colorado, U.S.A.
I think that you are correct. The fish in the top photo appears to have more rounded dorsal(?), anal, and pectoral fins found on females. On the other fish, as much as I can see, these fins are more pointed.
