Fish Marine Biology

3. A class of fish with skeletons of cartilage
6. Fins of fast swimming fish
9. A shark's tail fin
10. Toothlike scales covering shark's bodies
11. An organ in fish that allow them to maintain their position in the water column
15. Jawless fish
16. Most numerous class of fish
17. Largest animals in the sea besides the whale
18. A body coloration where the fish's dorsal side is dark and their ventral side is light

1. Remaining afloat
2. A body shape that is streamlined and produces little resistance to movement through water gillslits Gills that sharks have in order to breathe
4. Sensory cells that a shark uses to assist in locating prey
5. A body coloration of a banded pattern
7. An organ in sharks that picks up vibrations in the water
8. Overlapping plates that cover and protect fish's bodies
11. A period of time where fish produce a large number of eggs
12. The most feared shark
13. A fish with a forked tail
14. A type of skeleton