That's gonna cause a lot of stress. The box gets jostled and slammed during shipment. I think he's just stressed out. Just keep him warm, in the dark, and in shallow water.
Who am I? Well I am a Junior Member of the International Betta Congress and a breeder of white HMPKs, red dragon HMPKs, black/red dragon HMPKs, metallic multi HMPKs, blue masked HMPKs, and now multi color HMs. Soon to add black HMs. I will be showing in New Breeder class in fall of 2012.