せいがんえそじゃなかったです
青眼狗母魚じゃなかったです
seigan'esojanakattadesu

Noun
Desu Copula

The polite, past negative form of あおめえそ

1. Wasn't a blue-eyed female dogfish.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana