As a thank-you for saving Ermina, Mercphobia gives the group information on the rest of the Five Dragon Gods. And while they’re in the town of Tekka, they encounter someone who looks exactly like Erza...
He turned you all into fish 
so that you could live underwater.
Damit ihr auch im Wasser überleben könnt, hat
er euch prompt eine andere Gestalt verpasst.
Los convirtió en peces
para que pudieran vivir bajo el agua.
Ele transformou vocês todos em peixes
para que pudessem viver de baixo d'água.