Phantom dark energy is a proposal that explains the current observations that mildly favor the equation of state of dark energy \omega ^ { de } crossing -1 at 68 \% confidence level . However , phantom fields are generally ruled out by ultraviolet quantum instabilities . To overcome this discrepancy , in this paper we propose a mechanism to show that how the presence of bulk viscosity in the cosmic fluid can temporarily drive the fluid into the phantom region ( \omega < -1 ) . As time is going on , phantom decays and ultimately \omega ^ { de } approaches to -1 . Then we show these quintessence and phantom descriptions of non-viscous and viscous dark energy and reconstruct the potential of these two scalar fields . Also a diagnostic for these models are performed by using the statefinder pairs \ { s,r\ } . All results are obtained in an anisotropic space-time which is a generalization of FLRW universe .