  We investigate a generalized Chaplygin-like gas with an anisotropic equation
of state, characterizing a dark fluid within which a static spherically
symmetric black hole is assumed. By solving the Einstein equations for this
black hole spacetime, we explicitly derive the metric function. The spacetime
is parametrized by two critical parameters, $\mathcal{B}$ and $\alpha$, which
measure the deviation from the Schwarzschild black hole and the extent of the
dark fluid's anisotropy, respectively. We explore the behavior of light rays in
the vicinity of the black hole by calculating its shadow and comparing our
results with the Event Horizon Telescope observations. This comparison
constrains the parameters to $0 \leq \mathcal{B} < 0.03$ and $0 < \alpha <
0.1$. Additionally, we calculate the deflection angles to determine the extent
to which light is bent by the black hole. These calculations are further
utilized to formulate possible Einstein rings, estimating the angular radius of
the rings to be approximately $37.6\,\mathrm{\mu as}$. Throughout this work, we
present analytical solutions wherever feasible, and employ reliable
approximations where necessary to provide comprehensive insights into the
spacetime characteristics and their observable effects.
