まあじじゃありませんでした
真鯵じゃありませんでした
mājijārimasendeshita

Noun
Desu Copula

The polite, past negative form of まあじ

1. It wasn't true horse mackerel.; It wasn't a true horse mackerel.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana