acanthopteran
n. C2 Proficiency acan·thopter·an
n. a group of fish that have a special kind of scale called cycloid scales. These scales are smooth and round, and they are found in many types of bony fish.
n. a group of bony fish characterized by the presence of cycloid scales, which are smooth and rounded. This term is primarily used in ichthyology to classify certain orders of ray-finned fish.
The acanthopteran has smooth, round scales.
The biologist identified the specimen as an acanthopteran based on the distinctive pattern of its cycloid scales.
While the acanthopteran is a broad classification, it serves as a useful starting point for researchers studying the evolutionary transition from primitive to more modern bony fish structures.