The shovelnose sturgeon (Scaphirhynchus platorynchus) [5] is the smallest species of freshwater sturgeon native to North America. It is often called hackleback, sand sturgeon, or switchtail. Switchtail refers to the long filament found on the upper lobe …

The shovelnose sturgeon (Scaphirhynchus platorynchus) is the smallest species of freshwater sturgeon native to North America. It is often called hackleback, sand sturgeon, or switchtail. Switchtail refers to the long filament found on the upper lobe …

The shovelnose sturgeon is the most abundant sturgeon in the Missouri and Mississippi rivers. It is also occasionally caught in the Current River near Doniphan, Missouri.

Shovelnose sturgeon spawning in Wisconsin occurs during May and June. In the Red Cedar-Chippewa rivers during 1972, shovelnose sturgeon spawned the last week in May through the first week in June at water temperatures of 19.5-21.1 C (67-70 F).

The female deposits about 200,000 eggs over a gravel or rock bottom in the open channel of a large river. Spawning occurs April through June. The shovelnose sturgeon eats insect larvae (particularly flies and caddisflies), using its flexible sucking mouth to pull them in.

Explore the information available for this taxon's timeline. You can select an event on the timeline to view more information, or cycle through the content available in the carousel below. Threatened Status for Shovelnose Sturgeon Under the Similarity of Appearance Provisions of the Endan…

Shovelnose sturgeon are primitive, odd-looking fish. They have several rows of sharp, bony plates along their elongated body, a strongly forked tail, spade-shaped snout, sucker-like mouth, and four barbels. Shovelnose sturgeon are normally brown or olive colored with a cream-colored belly.

The shovelnose sturgeon is also called hackleback, switchtail, and sand sturgeon. Why are they called shovelnose sturgeon? They are called shovelnose for their flattened, shovel -shaped snouts.

Shov­el­nose stur­geons have an elon­gated body with five rows of sharply keeled body plates: 14-19 dor­sal plates, 38-47 lat­eral, 10-14 ven­tro­lat­eral. They are olive to yel­low­ish-brown in color on the top with lighter sides, and white on the bot­tom.

2002年10月23日 · Shovelnose sturgeon live to at least 14 years in Minnesota, but it is likely that some live longer. What Do They Eat? These benthic (bottom dwelling) fish suck their food up from the river substrate much like lake sturgeon.