1. Perch

2. 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: Actinopterygi i Subclass:Neopterygii Infraclass:Teleostei Order:Perciformes Family:Percidae Genus:Perca http://en.wikipedia.org/wiki/Perch Classification

3. 1. Mouth 2. Nostrils 3. Eye 4. Gill rakers 5. Gills 6. Vertebra 7. Anterior dorsal fin 8. Posterior 9. Caudal 10. Anal fin 11. Urinary bladder 12. Anus 13. Gonad 14. Dorsal aorta 15. Intestine 16. Pelvic fish 17. Stomach 18. Pancreas 19. Pyloric caeca 20. Liver 21. Heart 22. Bulbus arteriosus Perch