The Diet of a Sturgeon

Sturgeon are bony fish covered with five large external plates; they feed on the bottom of lakes and oceans in a vacuum-like manner with their suction tube mouths. Nine different kinds of sturgeon live in the North American region, including the shovelnose, white, Gulf, green, lake, pallid, short-nosed and Atlantic.

The many different sturgeon inhabit different waterways, some permanently and others at different stages in their life cycle. The bottom of the ocean, lakes, and rivers make for an ideal feeding ground for sturgeon.

The primary diet of the seven most common sturgeon to North America is mostly comprised of snails, clams, shrimp, crayfish, aquatic plants, insects and larvae and sludge worms.



The freshwater lake sturgeon of North America and most notably the Fraser River sturgeon fishing in Chilliwack, BC flourish on a diet of small fish, snails, clams, leeches, algae and fish roe. Soft bodied invertebrates, such as mayflies, have been noted to be a particular favorite to the lake sturgeon.


River-dwelling sturgeon also enjoy a diet rich in fish and crustaceans. Larger species of sturgeon feed on a variety of large fish such as herring, flounder, and salmon, they also add to this diet with the addition of crabs, crayfish, mussels, and barnacles. Some species even supplement their diet with dead fish and frogs.


Both small and large species of sturgeon that live in Bay areas and sturgeon fishing charters are anadromous; this just means that they migrate from saltwater to lay their eggs in the fresh water. Their diet is similar to that of their lake and river dwelling relatives, consisting mostly of crustaceans, insects, mollusks and worms.

Dietary Requirements For Pet Sturgeon

Siberian, Sterlet, and Diamond sturgeon are commonly kept as pets in pond conditions. They need a diet rich in protein, a minimum of 40% is ideal, and fish meal is an excellent source of this protein, as well as a host of vitamins, and this can mean adding nutrition to their diet. Supplementation is vital and easily achieved by meeting their water soluble vitamin needs with the addition of vitamins B1, B2, B3, B5, B6, B12, folic acid and ascorbic acid. Fat-soluble vitamins A, D, E, and K are relatively easy additions to improve the overall health of your pet.

For more information on where you can find out where sturgeons are residing, check out Fraser River fishing. 

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