Ichthyology Jargon

noun a type of fish belonging to the order Acanthopterygii, characterized by spiny fins

• The acanthopteran fish species have spiny fin rays that distinguish them from other fish.
• Those acanthopteran fish with the spiky fins are pretty cool to look at.
• Check out that funky acanthopteran fish with the spikes on its back!
• The acanthopteran nature of his personality made him stand out in a crowd.

noun a fish belonging to the sturgeon family (Acipenseridae)

adjective relating to or characteristic of the sturgeon family of fish (Acipenseridae)

• The acipenserine fish is known for its long lifespan and slow growth rate.
• Have you ever seen an acipenserine fish in person? They're huge!
• That acipenserine fish is a real tank, it could probably eat us whole!
• The acipenserine symbolizes longevity and wisdom in many cultures.

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.