With a worldwide shortage of premium caviar due to a shrinking sturgeon population, some black market importers have turned to an American cousin: a prehistoric-looking river creature, the paddlefish. Paddlefish are broadcast spawners, also known as mass or synchronous spawners, with fertilization occurring externally: gravid females release their eggs over bare rocks or gravel while males simultaneously release sperm. Paddlefish inhabit slow-moving, large, deep, freshwater rivers and reservoirs.

Understanding the Context

They only eat plankton, which are microscopic plants and animals. They eat by simply swimming around with their mouth open. paddlefish, (Polyodon spathula), archaic freshwater fish with a paddlelike snout, a wide mouth, smooth skin, and a cartilaginous skeleton. A relative of the sturgeon, the paddlefish makes up the family Polyodontidae in the order Acipenseriformes.

Key Insights

Paddlefish (Polyodon spatula) are one of North America’s most distinctive freshwater fish species. They are a member of the Acipenseriformes order, which contains only one other species: sturgeon. Editor’s Note: This article contains graphic images, including offensive language. An egregious act of wildlife vandalism has occurred in Missouri’s Lake of the Ozarks. The victims of said vandalism?

Final Thoughts

Paddlefish. Two separate fish were caught (live) with obscene language carved into the sides of... Paddlefishes are large, ancient ray-finned fishes closely related to sturgeons (order Acipenseriformes). They are notable for their elongated, paddle-like rostrum and (in the best-known living species) filter-feeding on zooplankton. Paddlefish can be distinguished from all other North American freshwater fishes by the presence of a large, paddle-shaped rostrum (up to 1/3 total body length) on the snout anterior to the mouth. Law: Something Fishy Is in Your Gourmet Basket, but It May Not Be Caviar