Perch

Perch is a common name for fish of the genus Perca, freshwater gamefish belonging to the family Percidae.

True perch have "rough" or ctenoid scales. On the anterior side of the head are the maxilla and lower mandible for the mouth, a pair of nostrils, and two lidless eyes. On the posterior sides are the opercula, which protect the gills. Also there is the lateral line system which is sensitive to vibrations in the water. They have a pair of pectoral and pelvic fins. There are two dorsal fins, the first one spiny and the second soft. There is also an anal fin, which is also considered spiny, and a caudal fin. The cloaca lies directly behind the anal fin. All perciform fish share this general morphology.

Kingdom: Animalia

Phylum: Chordata

Superclass: Osteichthyes

Class: Actinopterygii

Subclass: Neopterygii

Infraclass: Teleostei

Order: Perciformes

Family: Percidae

Genus: Perca

http://en.wikipedia.org/wiki/Perch

Classification

1. Mouth2. Nostrils3. Eye4. Gill rakers5. Gills6. Vertebra7. Anterior dorsal fin

8. Posterior9. Caudal10. Anal fin11. Urinary bladder12. Anus13. Gonad14. Dorsal aorta

15. Intestine16. Pelvic fish17. Stomach18. Pancreas19. Pyloric caeca20. Liver21. Heart22. Bulbus arteriosus

Perch