Ichthyology Glossary

noun a type of fish belonging to the order Acanthopterygii, which includes spiny-finned fishes

• The acanthopterygian fishes are characterized by their spiny fins.
• I saw a cool acanthopt fish at the aquarium with spiky fins.
• That acanthopt fish looks punk rock with its spiky fins!
• Her words were like the sharp spines of an acanthopt fish, cutting through the conversation.

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 class of fish characterized by bony rays in their fins

• Actinopterygii is a class of ray-finned fish that includes most of the familiar species we see in aquariums.
• Hey, did you know that actinopterygii are the most common type of fish found in freshwater lakes?
• Those actinopterygii fish are everywhere, they're like the rockstars of the underwater world!
• Just like actinopterygii fish gracefully navigate through water, we must navigate through life's challenges with finesse.

noun a term used in biology to refer to fine, hair-like structures found in some organisms

• Actinotrichia are specialized collagen fibers found in the fins of some fish species.
• Did you know that actinotrichia are like the support beams of a fish's fin?
• Those actinotrichia thingies in the fish fins are pretty cool, huh?
• The actinotrichia in the fish fins act like a strong foundation, allowing them to glide through the water effortlessly.