I am aware that bettas swim primarily with their pectoral fins, unlike other fish that use their caudal fins for propulsion. One thing that I do not recall seeing other bettas do, however, is hover. Odysseus ALWAYS has his pectoral fins going like mad, even when he is resting on something. This is true in perfectly still water and true in his filtered aquarium. It's like a hovering effect. Is my fish weird or do other bettas do this?