Vocabulary

3. Bony fish with thin, paired fins supported by bony spines called lepidotrichia
6. bottom-dwelling, eel-shaped marine creatures
7. A marine tunicate that has a body with orifices through which water flows into and out of the central pharynx
10. Another term for tail fin,the only fin to be connected to the vertebral column
11. Lower chamber
13. A primitive fish
15. a bony flap that covers the gills of bony fish and chimaeras
17. A parasitic fish native to the northern and western of the Atlantic ocean
18. Another type of cartilaginous fish closely related to sharks and rays
19. A group of bony fish with fleshy, paired fins that are attached to the body by a single bone

1. upper chamber
2. A gas-filled organ that helps fish maintain their buoyancy in water
4. A flexible,rod-shaped, supporting structure
5. An unpaired fin on the back of a fish or whale
8. An organism's body temperature is mainly determined by the temperature of its environment, rather than its own metabolic heat production
9. are neither sharks or rays
12. Spine, tooth-like projections found on the cartilaginous fish, such as shark and rays.
14. a chamber in many fish that serves as a common opening for the digestive, urinary, and reproductive systems
16. The paired fin born by the pectoral girdle, behind the gill opening or slightly dorsal or ventral to this position.