1. Bony Fish
Morphology

2. Common Bony Fish Morphology

3. Shape
Fusiform
Streamlined
Efficient
Little resistance

4. Fish Fins

5. Unpaired Fins Caudal Used for thrust while swimming Structure
Fin rays are bony pointed spines
Dorsal and anal
Used for stabilization
Prevents pitching (low speeds)
Prevents rolling (high speeds)

6. Paired Fins Pectoral fins Functions Stabilization Turning Stopping
Structure
Fin rays are soft rays

7. Other Structures Operculum Bony flap Covers gill cavity Lateral Line
Series of very small canals
Pressure receptors
“Sense of distant touch”
Feel their way through the water

9. Gills
Gas exchange
Oxygen
1/20 that of air
CO2
Large surface area