にっぽんザリガニじゃありませんでした
日本ザリガニじゃありませんでした
nipponzariganijārimasendeshita

Noun
Desu Copula

The polite, past negative form of にほんざりがに

1. It was not a Japanese crayfish.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana