big_pond is right. The best way to catch an Apalousa a.k.a flathead catfish(plyodictis olivaris) is with live bait. They are different from other catfishes because they are extremely agressive and (just like bass) only prey on living creatures. For this reason, I would be suprised if a Flathead catfish hit a piece of bread. My guess is that it was a great big Channel Cat. But if it is a flathead is has probably eaten everything in the pond already. When you catch him let us know what kind he was.

Good luck
-Scott

Take great care of it, or let someone else have it.