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.