おうごんちょうちょうぎょだったら
黄金蝶々魚だったら
ōgonchōchōgyodattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of こがねちょうちょううお

1. If it were a golden butterflyfish; Were it a golden butterflyfish

Tara Conditional
Usually Written in Kana