おうごんちょうちょうぎょでしょう
黄金蝶々魚でしょう
ōgonchōchōgyodeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of こがねちょうちょううお

1. Probably a gold butterflyfish.

Polite
Presumptive
Conjecture
Usually Written in Kana