よこじまくろだいでわありませんでした
横縞黒鯛ではありませんでした
yokojimakurodaidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of よこしまくろだい

1. Was not a striped sea bream.; Was not a black porgy with stripes.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana