Used mostly for its roe caviar, sturgeon is a fish that lives most of its life in the sea except for when it comes into rivers to spawn.
Sturgeon may also eaten, sold cut into steaks or fillets. Although it is not commonly found in grocery stores or fish markets. One popular preparation is smoked sturgeon. You can find smoked sturgeon on many online gourmet shops and it sells for well over $50.00 per pound.
If you're looking for a substitute for sturgeon you can select one of these other fatty fish:
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Because sturgeon is such a dense fish (more like meat than fish) most sources recommend cooking slowly by oven baking or even poaching. Grilling this fish tends to be less successful but can be done just be careful not to overcook it. Cooking 5 to 6 minutes per side should be sufficient for steaks. See preparation tips.