しまあじでわありませんでした
縞鰺ではありませんでした
shimājidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of しまあじ

1. Was not a striped jack.; Was not a horse mackerel.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana