ぎょしょくこうもりであれば
魚食蝙蝠であれば
gyoshokukōmorideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of うおくいこうもり

1. If it were a fish-eating bat; If it is a fish-eating bat

Ba Conditional
Usually Written in Kana