  Inspired by the newly observed $\Lambda_b(6072)$ structure, we investigate
its strong decay behaviors under various assignments within the $^3P_0$ model.
Compared with the mass and total decay width, our results suggest that the
$\Lambda_b(6072)$ can be regarded as the lowest $\rho-$mode excitation in
$\Lambda_b$ family. Then, the strong decays of $\rho-$mode nonstrange partners
for the $\Lambda_b(6072)$ are calculated. It is found that the $J^P=5/2^-$
$\Lambda_b$ and $\Lambda_c$ states are relatively narrow, and mainly decay into
the $\Sigma_b^{(*)} \pi$ and $\Sigma_c^{(*)} \pi$ final states, respectively.
These two states have good potentials to be observed in future experiments,
which may help us to distinguish the three-quark model and diquark model.
