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Across 2. water passes over to oxygenate the blood supply 4. opening where fish take in water 7. fish that hide eggs but show no parental care 8. produces less drag, for rapid swimming 11. bony flap that covers the gill cavity 12. 2 unpaired fins used to stabilize, prevent pitching 15. stores nutrients, detoxify substances, contributes to bouyancy 17. fish that live in sunlit, open waters, free of the bottom 19. gas filled organ for efficient bouyancy 21. trumpet, butterfly, swordfish, moray, albacore, flounder 22. body type of very active swimmers, streamlined shape 23. sense of smell 24. fish have this type of cardiovascular system

Down 1. sensory canals in head and body for detection of vibrations 2. thick, heavy, more primitive scales on fishes 3. silver or white bottoms in contrast to dark backs, many with this are predators 5. a color cell, pigment particles of red, orange, yellow, black, controlled with nervous or endocrine systems 6. located on sides of fish, used to stabilize, turn, stop 9. fishes fin that is at its rear, inappropriately called a tail 10. cartilaginous fishes, sharks, and rays 13. protective layer of scales on most fish, also called denticles 14. provides main thrust in swimming 16. tremendous mosaic & diversity of structure, form, color 18. migrate to freshwater to spawn from open oceans, anadromous 20. fish have good vision 21. appendage used for tasting and feeling