ACF housed with Corydoras?

[Elliriyanna]

He currently lives with 2 otocinclus and a guppy he doesnt mind and my Corydoras are bigger than him lol

[SanderB]

Xenopus laevis should be kept i a species only tank.
Corydoras live in the Amazone, Xenopus laevis are from Africa, so it is normal that a clawed frog doesn´t know that he shouldn´t eat a Corydoras. An oscar is also from the Amazone, so in evolution he learned not to eat Corydoras.