西 にし鼠鮫 ねずみざめじゃありませんでした
ni shi nezumizamejārimasendeshita

Noun
Desu Copula

The polite, past negative form of 西鼠鮫

1. Was not a western rat shark.; Was not a shark from the west.

Past/Perfective
Negative
Polite
Terminal Form