how do i determine the sex?

kibby · May 31st, 2006

i have 2 black mollies. how do i determine the sex of the fish?

leafgirl115 · May 31st, 2006

How to identify if you fish is male or female

Livebearers such as: Mollies, Platies, Swordtails, Guppy and Endlers are quite easy to sex when you know what to look for.

When looking to sex your fish you need to look for the gonopodium. This is the anal fin on males. This fin is next to the belly of the fish.

Picture of a gonopodium:

A female’s anal fin will be rounded and will look like this:

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