かますさわらじゃありませんでした
魳鰆じゃありませんでした
kamasu sawarajārimasendeshita

Noun
Desu Copula

The polite, past negative form of かますさわら

1. Was not bream.; Was not horse mackerel.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana