psephurus gladis

Thân thiện

A psephurus gladis swims gracefully in a deep, clear river.

Definition

1. Noun:
   • A species of large freshwater fish: Psephurus gladis is the scientific name for the Chinese paddlefish, a species native to the Yangtze River basin in China. It is characterized by its elongated, paddle-like snout (rostrum) and large size, historically reaching over 7 meters in length. It is similar in appearance to the related paddlefish (Polyodon spathula) found in the Mississippi River basin in North America.

Usage Notes

• This term is a scientific binomial name (genus , species ). It is primarily used in academic, zoological, and conservation contexts.
• In general English, the common name "Chinese paddlefish" is more frequently used.
• The species is believed to be extinct, with the last confirmed sighting reported in 2003. Therefore, contemporary usage often refers to it in a historical or conservation context.

Examples

• Noun:
  • The Psephurus gladis was once a majestic inhabitant of the Yangtze River.
  • Scientists studied the morphology of Psephurus gladis to understand its evolutionary relationship to other paddlefish.
  • The probable extinction of Psephurus gladis is a significant loss of biodiversity.

Advanced Usage

• In taxonomic classification: The name is used to precisely identify the species within the biological classification system.
  • The genus Psephurus contains the single species Psephurus gladis.
• In conservation literature: Used when discussing extinction events, habitat loss, or historical fauna.
  • Overfishing and dam construction led to the decline of Psephurus gladis.

Variants and Related Words

• Chinese paddlefish (n): The common English name for .
• Paddlefish (n): The common name for fish of the family Polyodontidae, which includes both the Chinese paddlefish () and the American paddlefish ().
• Polyodon spathula (n): The scientific name for the American paddlefish, a related species from North America.

Synonyms

• Chinese paddlefish: The direct and most common synonym in non-scientific contexts.

Related Phrases

• Functionally extinct: A phrase often used in conjunction with to describe its status prior to being declared extinct.
  • By the late 1990s, Psephurus gladis was considered functionally extinct.
• Living fossil: A term sometimes applied to paddlefish due to their ancient lineage.
  • Like its American cousin, Psephurus gladis was often described as a living fossil.

Học thuật

Noun

1. fish of larger rivers of China similar to the Mississippi paddlefish

Từ đồng nghĩa

• Chinese paddlefish
• Psephurus gladis