noun
- fish belonging to the order Perciformes, which includes perch, bass, and many other spiny-finned fish
Usage: zoological; plural form
Examples
- Percoids are among the most diverse groups of fish in the ocean.
- The aquarium’s percoids section featured several species of bass and grouper.
- Marine biologists study percoids to understand fish evolution.
- Many commercially important fish are percoids.
- The percoids in this lake include yellow perch and walleye.
- Percoids typically have spiny dorsal fins and ctenoid scales.