I used to own one, he was pretty cool looking. My bf decided to heat the tank up b/c his one fish needed heat and of course that killed the sturgeon b/c it need cold water.
i have had a 12inch sturgeong in my 30gallon but then i moved him into my 500gallon pond, where he got tangled up in the weed and killed him self. lol.
They are really cool and ancient.