からすふぐじゃなかったです
烏河豚じゃなかったです
karasufugujanakattadesu

Noun
Desu Copula

The polite, past negative form of からす

1. Wasn't a pufferfish.; Wasn't a black/crow pufferfish.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana