Guppy & Mollie Help

[i3lade4life]

In the last few days my female guppy & Balloon Mollie are both constantly hanging around in the top corner of my tank. I am pretty sure this is not natural behaviour, if anyone out there knows why they are doing this I would love to know too.
Thanks a lot

 

[mommyof2bettas]

what are your water parameters (ammonia, nitrite, nitrate)?
Did you cycle your tank?
How big is the tank?
What fish and how many are in the tank?