The one with the long beak must be either Campylomormyrus ibis or C. numenius. The giant one belongs to the "dolphin whale" group and could be Mormyrus caballus or M. kannume (longnose variant).
Spectacular animals in an aquarium and my favorite family of fishes (despite my current obsession with Datnoids). Hopefully Wes posted those pics to send the message he is getting them in.