ウミヅキチョウチョウウオであれば
umizuki chōchoōodeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of ウミヅキチョウチョウウオ

1. if it were a Umizuki butterflyfish; if it is a Umizuki butterflyfish

Ba Conditional