ちょうちんあんこうであれば
提灯鮟鱇であれば
chōchin'ankōdeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of ちょうちんあんこう

1. If it were an anglerfish with a lantern; If one were an anglerfish with a lantern

Ba Conditional
Usually Written in Kana