spiny-finned fish
Definition
Noun: A bony fish belonging to the superorder Acanthopterygii, characterized by having fins supported by sharp, stiff, unbranched spines, typically at the front of the dorsal, anal, and pelvic fins. This is a large taxonomic group that includes many familiar fish such as perch, bass, and scorpionfish.
Usage
The term is primarily used in scientific, zoological, or ichthyological contexts to classify and describe a major group of teleost (bony) fishes based on their fin structure. - The aquarium's new exhibit features several species of spiny-finned fish. - Biologists study the evolution of spiny-finned fish to understand vertebrate adaptation.
Advanced Usage
- As a taxonomic descriptor: The term is often used to specify a morphological characteristic critical for identification within the class Actinopterygii (ray-finned fishes).
- The key distinguishing feature separating it from the soft-rayed fishes is that it is a spiny-finned fish.
Variants and Related Words
- Acanthopterygian (noun): The formal scientific synonym for a spiny-finned fish.
- Spiny-rayed fish (noun): An alternative common name with the same meaning.
- Teleost (noun): A broader category of bony fish to which all spiny-finned fish belong.
Synonyms
- Acanthopterygian
- Spiny-rayed fish
Antonyms
- Soft-finned fish (noun): A fish whose fins are supported primarily by soft, branched rays, such as a trout or salmon (superorder Ostariophysi).
Noun
-
a teleost fish with fins that are supported by sharp inflexible rays
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