1. A large sturgeon found in European rivers and the Black Sea, valued for its roe (caviar) and flesh.
Usage: Also called beluga sturgeon in some contexts.; Primarily used in ichthyology and culinary contexts.

Examples

• The hausen is one of the largest freshwater fish species in Europe.
• Caviar from the hausen is considered a delicacy in many cuisines.
• Historically, hausen populations were abundant in the Danube River.
• The hausen can weigh over 1,000 pounds when fully grown.