  We study mesonic line operators in Chern-Simons theories with bosonic or
fermionic matter in the fundamental representation. In this paper, we elaborate
on the classification and properties of these operators using all loop
resummation of large $N$ perturbation theory. We show that these theories
possess two conformal line operators in the fundamental representation. One is
a stable renormalization group fixed point, while the other is unstable. They
satisfy first-order chiral evolution equations, in which a smooth variation of
the path is given by a factorized product of two mesonic line operators. The
boundary operators on which the lines can end are classified by their conformal
dimension and transverse spin, which we compute explicitly at finite 't Hooft
coupling. We match the operators in the bosonic and fermionic theories.
