Samlin

Hi. Some help pls. I have a swordtail that looks quite big. She has a triangular black end spot about 6mm each side just in front of the anal fin. Is she pregnant? If so, should i put her in a breeding tank? Similar with the guppy? How do i tell is she is pregnant? My black molly looks 'big' also. The stomach area is squaring off. Any suggestions on the way forwardThx

aquarist48

It sounds like they all may be pregnant. If you have a breading tank that is already cycled it would probably be a good idea. Hope all goes well. (have cigars on hand to pass out when the birthing starts! teehee)

The guppy will have the same black spot with a big belly if she's expecting too.

Samlin

Thx for help Aquarist48. Is there a waiting period to have them in the Breeding tank prior to them birthing?