is one piece episode 611 filler?

In the scrap heap beneath C Building, the small dragon introduces himself to Luffy as Momonosuke. Luffy thinks that he has heard the name before, but Momonosuke yells at him for drooling.

Momonosuke continues, stating that he is not food and would rather eat than be eaten. Luffy grabs Momonosuke's horns, looking for a person stuck to his neck communicating by farts, but soon realizes that Momonosuke (which Luffy thinks is an eel) is the one talking.

Momonosuke chides Luffy for drooling, but his own stomach then rumbles.