C121 is correct. - Frankhe said he thought they were c121.
There are a few subtle differences between C121 and C. metae. On C121, the black stripe ends on the fishes' back whereas on C.Metae, it ends on the bottom of their tail. Also the orange patch seen on C121 is absent on C.Metae.....apparently C121 is different to bandit cory's. Even though they look identical to me.