Mollys Swimming In Spirals Threw The Tank

[lily-rae]

im not sure why and usually i work it out but two of my mollys are swimming in spirals around the tank iv sectioned them off just now in own tank but id still like to help them..any ideas

 

[black angel]

you need to tell us more about the tank..size, filtration, how often you do water changes and how much, do you temp match new water..tank water stats, ph, nitrite, nitrate and ammonia. what other fish. temp of the tank.