Male or female?

[Molson_28]

just want to make sure this isn't a male before I add to my tank

 

[Molson_28]

Is it possible for a female to show a little black in the bottom fins?

 

[Ayi]

Somedays my females have really dark coloration. The best way to tell with yellow labs is to vent them, since there's no color morph or any other signs.

 

[Molson_28]

How do I vent them

 

[Molson_28]

K I just looked it up and I'll give it a try