ONE FISH, TWO FISH,
RED FISH, BLUE FISH

Across
1. what a shark's skeleton is made of
3. bloodsucking fish with no jaw
5. can be used to determine fish's age
9. means to live in the water
11. a baby fish
13. type of lobe finned fish, thought to be extinct
15. a well-known shark movie
19. Unlike fish, frogs have ___ loop circulation
20. the tail fin of a fish
21. a famous clownfish (pixar movie)
23. fin on the top of a fish
24. detects vibrations: ____ line

Down
2. organs that fish use for respiration
4. body of water where most of the world's fish live
6. sharks cannot swim in this direction
7. the kingdom all fish belong to
8. covers the gills
10. fins on the side of the fish, near shoulder area
12. related to a lamprey
14. the number of chambers in the fish's heart
16. these fish swim miles upstream to spawn
17. a fish related to a shark
18. fin located near the fish's anus
22. helps maintain bouyancy: swim ____
25. cold-blooded