Aquatic Animal Classification

noun a taxonomic group of teleost fishes characterized by spiny fins

• The Acanthopterygii is a superorder of fish that includes species like perch and bass.
• I heard that Acanthopterygii are known for their spiny fins.
• Those Acanthopterygii fish are pretty cool with their sharp fins.
• Just like the Acanthopterygii fish, sometimes we need to be a little spiky to protect ourselves.

noun a member of the Actinopterygii, a subclass of bony fishes characterized by the presence of ray-finned fins

• The actinopteran fish is known for its ray-finned fins.
• I saw a cool actinopteran fish at the aquarium with really fancy fins.
• Check out that actinopteran fish, it's got some sick fins!
• Her movements were as graceful as an actinopteran fish swimming through water.