Percoid refers to fish that belong to the family Percidae. They are typically freshwater fish, and many are considered to be game fish or food fish. There are several synonyms that can be used to describe percoid fish, including perch-like fish, perch-finned fish, percomorphs, and perches. These terms are often used interchangeably to describe different species of percoid fish. Other descriptions that might be used include spiny-finned fish, predatory fish, and bony fish. Regardless of the term used, all percoid fish are characterized by their spiny dorsal fins, which help them to navigate through the water and capture prey.