ぎんがみあじであれば
銀紙鯵であれば
gingamiajideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of ぎんがめあじ

1. If it were silver-skinned horse mackerel; Assuming it is silver-skinned horse mackerel

Ba Conditional
Usually Written in Kana