オオフエヤッコダイじゃなかったです
ōfueyakkodaijanakattadesu

Noun
Desu Copula

The polite, past negative form of オオフエヤッコダイ

1. Wasn't a splendid sea bream.; Wasn't a large feathery sea bream.

Past/Perfective
Negative
Polite
Casual Register