Across
- 2. lays eggs
- 5. fin on the back is called .. fin
- 8. cold-blooded animal
- 10. hagfishes and lampreys are ...
- 12. slime-producing fish
- 13. tail fin with unequal lobes
- 15. flat, disc-shaped fish
- 16. long, snake-like fish
Down
- 1. protection of species
- 3. mucus for protection produced by some fish1
- 4. excessive fish harvesting that reduces biodiversity
- 6. flexible skeletal tissue, sharks and rays have it in skeleton
- 7. fish that lives in rivers or lakes
- 9. lives and hunts alone
- 11. fish organs for breathing underwater
- 14. warm-blooded fish