Are My Dalmatian Mollies Sick?

[therealnickster]

This past week, I have noticed on various occasions that my two Dalmatian Mollies would begin to swim vertically (not in unison) for a few seconds then go back to swimming naturally. Is this normal molly behavior? Are my mollies ill? I appreciate any feedback. Thank you!

 

[Matt68005]

Sounds like bullying. Make sure you keep one male to 3 or 4 females.

 

[therealnickster]

Sounds like bullying. Make sure you keep one male to 3 or 4 females.

Thanks Matt68005!

The two dalmatian mollies I have are both female if I am correct. Sorry, I should have mentioned that earlier. They are also inseparable. I have not seen them swim that way since I posted this thread, but I do worry that if it is not bullying as you said, then what could it be. Thanks again!