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Photo of a Shovelnose Sturgeon

Species profile

Shovelnose Sturgeon

Scaphirhynchus platorynchus

Bony fishIUCN: Vulnerable216 iNat observations

At a glance

Shovelnose Sturgeon (Scaphirhynchus platorynchus) is an IUCN Vulnerable bony-fish species regulated in 13 of 66 jurisdictions tracked by CatchRules across the U.S. and Canada.

The strictest bag limit is 1 (Wyoming); the most generous is 10 (Iowa).

Across 4 jurisdictions with stated minimum sizes, the average minimum is 26.3 in (≈ 2 ft 2 in).

Confirmed by 192 research-grade iNaturalist observations, with Minnesota, Wisconsin, and Illinois the top jurisdictions by observation count.

Listed under CITES — verify protected-species rules with the issuing agency before retaining or handling.

Notable details

  • The smallest sturgeon native to North America, typically 18–30 inches long.
  • Its flat, shovel-shaped snout gives it both its common name and a bottom-feeding advantage.
  • Four fleshy barbels near its mouth detect invertebrates buried in river sediment.
  • Can live more than 30 years.
  • Its roe is sometimes harvested and processed as a caviar substitute.

Protected status

CITES: appendix II
  • CITES Appendix II (all Acipenseriformes not in Appendix I).

Always verify protected-species rules with the issuing agency before retaining or handling.

Background

The shovelnose sturgeon, Scaphirhynchus platorynchus, is the smallest species of freshwater sturgeon native to the United States of America. It is often called "hackleback", "sand sturgeon", or "switchtail." Switchtail refers to the long filament found on the upper lobe of the caudal fin (often broken off as adults).

Background excerpt adapted from Wikipedia's Shovelnose Sturgeon article (CC BY-SA). Visit Wikipedia for the full entry.

Photo credit: iNaturalist / Wikipedia. Identification reference only — verify regulations with the issuing wildlife agency before retaining a catch.