魯魚 ろぎょ あやまりではありませんでした
rogyono ayamaridewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 魯魚の誤り

1. It was not a mistake of the carp.; It wasn't my fault.

Past/Perfective
Negative
Polite
Formal Register