れんぎょじゃなかったです
鰱魚じゃなかったです
rengyojanakattadesu

Noun
Desu Copula

The polite, past negative form of れんぎょ

1. Wasn't a carp.; Wasn't a crucian carp.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana