[AquaticLife] Determining the Sex of Mollies
Quite simple, actually. The males have a modified anal fin that is known as a gonopodium, while females will have a full anal fin. Males also are slimmer and have less deep bodies than the females, and tend to be slightly smaller. This last is not truly definitive until all the mollies are full grown.
Though not as noticeable in dark colored mollies as it is in other, related, livebearers, female mollies have what is known as a gravid spot. This is an area near the anus on the body of the female that will darken as the time to give birth arrives, and lightens in color shortly after
\Steve//
Category: Philippines Internet Koi Society
