Corsola Has Meloetta Moveset?

[Former user]

In version 1.1.2. I went fishing with an Old Rod in Suntouched City and caught a level 14 Corsola. Its moveset is: Dark Sonata, Superpower, Hyper Voice, Sing. None of these are natural for Corsola; Dark Sonata is a Zeta/Omicron move exclusive to Meloetta, who can learn the other three moves as well.