Beluga Sturgeons (Huso Huso) Have A Diet Of Large Fish (73% Of The Diet) Additional Food Items Will Or May Include Molluscs And Crustaceans,Aquatic Birds And Young Seals,So ZENash Make Sure To add Fish Too Large For The Beluga Sturgeon To eat. 2nd Response:For That The Diet In The Mod Is Sprat Which Is in The deep freeze DLC,So Make Sure to Get The DLC!