Sturgeon (Fish) br br Kingdom: Animalia, br br Phylum: Chordata, br br Superclass: Osteichthyes, br br Class: Actinopterygii, br br Order: Acipenseriformes, br br Family: Acipenseridae, br br Subfamilies: Acipenserinae or Scaphirhynchinae, br br Scientific name: Acipenseridae, br br Mass: Beluga: 2,500 lbs, br br Rank: Family, br br Higher classification: Acipenseroidei, br br ** Did you know: During the American Revolution, an American officer had his leg broken when a 10 foot sturgeon leaped into his boat on the Potomac River near br br *** Sturgeon is the common name for the 27 species of fish belonging to the family Acipenseridae. Their evolution dates back to the Triassic some 245 to 208 million years ago.