Definition

1. Adjective:
   • Migrating from fresh water to the sea to spawn: Describes fish that live most of their lives in freshwater environments (like rivers or lakes) but migrate to the ocean or sea to reproduce (spawn).

Usage

• The term is used specifically in biology and zoology to describe the life cycle and migratory pattern of certain fish species.
• It is the opposite of anadromous (migrating from the sea to fresh water to spawn).

Examples

• The European eel is a classic example of a catadromous fish.
• Scientists study the catadromous migration to understand the life cycle of these species.
• Unlike salmon, which are anadromous, these species are catadromous.

Advanced Usage

• Catadromous life history: A biological strategy where growth and development occur in freshwater, but reproduction requires a migration to saltwater.
  • The catadromous life history of the eel involves a long journey to the Sargasso Sea.

Variants and Related Words

• Catadromy (noun): The phenomenon or behavior of being catadromous.
  • The catadromy of certain eels is a fascinating subject for marine biologists.

Synonyms

• Freshwater-to-sea migratory (descriptive phrase).

Antonyms

• Anadromous (adj.): Migrating from the sea to fresh water to spawn.

Adjective

1. migrating from fresh water to the sea to spawn