かわずあんこうじゃなかったです
蝦蟇鮟鱇じゃなかったです
kawazuankōjanakattadesu

Noun
Desu Copula

The polite, past negative form of がまあんこう

1. Wasn't a toadfish.; Wasn't anglerfish.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana