かぶとさかなじゃなかったです
兜魚じゃなかったです
kabuto sakanajanakattadesu

Noun
Desu Copula

The polite, past negative form of かぶとうお

1. Wasn't fishing.; Didn't have any fish.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana