Being bottom-feeders, sturgeon have several sources of food that can be found along the river bottom. The diet of a sturgeon in the ocean may include sand lances and callianassid shrimp. Shrimp, clams, crabs, worms, mussels, snails, small bony fishes ... Green sturgeon, beluga sturgeon; Family: Acipenseridae. Insect larvae are a staple of the sturgeon’s diet, along with mollusks and other small invertebrate that live in the mud. Unlike most other fishes, its taste buds are on the outside of its mouth. To understand the environmental and developmental determinants of early life stage feeding in ESA‐threatened green sturgeon (Acipenser medirostris), we performed a diet … In the estuary sturgeon may feed on amphipods, opossum shrimp, clams, or anchovies. Their diet usually includes bottom-dwelling amphipods, worms, shrimp, crabs, as well as a variety of fishes. The lake sturgeon (Acipenser fulvescens), also known as the rock sturgeon, is a North American temperate freshwater fish, one of about 25 species of sturgeon.Like other sturgeons, this species is an evolutionarily ancient bottom feeder with a partly cartilaginous skeleton, an overall streamlined shape and skin bearing rows of bony plates on its sides and back, resembling an armored torpedo. They have a relatively complex life history that includes spawning and juvenile rearing in rivers followed by migrating to saltwater to feed, grow, and mature before returning to freshwater to spawn. Diet. Did you know? Smaller white sturgeon of Nechako River in British Columbia eat fish eggs, shrimp, clams, fly and bug larvae, small crayfish, eulachon and other fish; while the larger ones eat bigger fish such as salmon, flounder and herring, they also enjoy mussels, crabs and barnacles. They will normally feed on any other dead fish as well, which are also generally found along the bottom. Green sturgeon are benthic feeders that use their barbels and protruding ventral mouth to find prey. All sturgeon are migratory, typically spending most of their adult lives in estuaries, the lower reaches of rivers, or the ocean. * Normal Diet. Green sturgeon are an anadromous fish, which means they can live in both fresh and saltwater.

White sturgeon (the most powerful and largest fish found inland of North America) have their own food choices. Sturgeon are large, very long-lived and late to mature.

Sturgeon also feed on other fish. Mostly a bottom-dweller, a white sturgeon spends its time rummaging on the seafloor for food.