Fish Biology Terms

noun a type of fish belonging to the family Acipenseridae, which includes sturgeons and paddlefish

• The acipenserid family includes sturgeons, which are known for their long lifespans.
• I read that acipenserids can live for over 100 years!
• Those acipenserids are like the grandpas of the fish world, living so long.
• The acipenserid's ancient lineage is like a living fossil in the modern world.

noun a fish belonging to the class Actinopterygii

adjective relating to or belonging to the Actinopterygii, a class of bony fishes characterized by the possession of fins supported by rays

• The actinopterygious fish have fins supported by bony rays.
• Those actinopterygious fish have really cool fins.
• Check out the actinopterygious fish, they're so rad.
• Her dance moves were as graceful as an actinopterygious fish swimming through water.