Luckily bettas don't go through that with local breeders. Bettas are packed in styrofoam insulated boxes, the bags are filled with 1/3 water 2/3 air, wrapped in newspaper, placed in a brown paper lunch bag an rolled up again and placed in the box....excess space is filled with packing peanuts or crumpled newspaper....heat packs are added when needed.
*This is just how I plan on shipping/shipped when I shipped some fish to family.
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.