acanthopterygian
Definition
Noun: A type of bony fish (teleost) belonging to the superorder Acanthopterygii, characterized by having fins supported by spiny, sharp, and inflexible rays. This large group includes many common spiny-finned fish.
Usage
The term is a formal, scientific classification used primarily in ichthyology (the study of fish) to categorize a major group of teleost fish. * The perch is a classic example of an acanthopterygian. * Ichthyologists study the evolutionary history of acanthopterygian fishes.
Advanced Usage
- The term is often used in contrast to "malacopterygian," which refers to fish with soft-fin rays.
- It can function attributively as an adjective (e.g., "acanthopterygian species," "acanthopterygian characteristics").
Variants and Related Words
- Acanthopterygii (proper noun): The scientific superorder name for this group of fish.
- Spiny-finned fish (noun): A common descriptive name for acanthopterygians.
Synonyms
- Spiny-rayed fish
- Teleost fish (broader category; all acanthopterygians are teleosts, but not all teleosts are acanthopterygians)
Different Meanings
This word has a single, specific zoological meaning and is not used in general or figurative contexts.
Noun
-
a teleost fish with fins that are supported by sharp inflexible rays
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