ぬまかれいじゃありませんでした
沼鰈じゃありませんでした
numa kareijārimasendeshita

Noun
Desu Copula

The polite, past negative form of ぬまがれい

1. Was not flounder.; Was not a flounder.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana