ようこえがわいるかであれば
揚子江河海豚であれば
yōkoegawa irukadeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of ようすこうかわいるか

1. If it were the Yangtze River dolphin; If it is the Yangtze River dolphin

Ba Conditional
Usually Written in Kana