The Eel Thing - S1.E19

Rockna competes against a woman named Esmeralda and other chefs of Mon World in a cooking contest in the Water Realm. When Eccentro is unable to catch a fish for the meals, he drops out and attacks the stadium with an electric eel monster with Zap. The Mon Colle Knights fight the monster with a fire monster named Scorch and defeats Eccentro. Esmeralda turns the remains of Zap into an eel dish winning her the contest.