Perch dissection

Perch dissection

1. PERCH DISSECTION

2. Perch are bony fish, they have an endoskeleton made mostly of bone Perch Dissection

3. They are covered in thick, keratin heavy scales These help reduce friction in the water so fish can swim quickly They also protect soft tissue from damage Perch Dissection

4. Most bony fish have two eyes without eyelids They do have a protective layer Perch Dissection

5. There are 4 pairs of gills, one on each side of the head, and they are protected by an operculum The operculum also force water over the gills to help the fish breathe Perch Dissection

6. Similar to cartilaginous fish, bony fish have 5 different types of fins: Dorsal Pectoral Pelvic Anal Caudal Perch Dissection

7. Perch, like all fish possess a lateral line used to detect pressure changes Perch Dissection

8. To reach the internal organs, a window is cut on one side of the fish Perch Dissection

9. A perch has a complete digestive system, a closed circulatory system, and a complete reproductive system Perch Dissection

10. One major difference between bony and cartilaginous fish is buoyancy Bony fish has a normal-sized liver, and instead use a gas (swim) bladder to stay afloat Perch Dissection

11. Perch have complex brains Perch Dissection