| A | B |
|---|
| fins | external structures that help a fish steer, stop, and keep from rolling over |
| gills | organs of respiration in a fish |
| swim bladder | air-filled sac that a fish can adjust to swim higher or lower in the water |
| lateral line | row of mucous glands on the outside of a fish that senses water pressure and vibrations nearby |
| lamprey | an example of a jawless fish; it is a parasite that hooks to the body of larger fish |
| shark | seeing the dorsal fin of this cartilaginous fish at a swimming beach will drive away all the swimmers |
| skates and rays | cartilaginous fish that are extremely flat with broad side fins and long tails |
| perch | the type of bony fish that was dissected in lab |
| salmon, tuna, & bass | common members of the Bony Fish class |
| scales | body covering on the skin of most fish |
| Jawless Fish | class of fish having no scales, fins, hard bones, or jaws |
| Cartilaginous Fish | class of fish that have jaws and fins, but no hard bones |
| Bony Fish | class of fish whose members all have hard, calcium bones (it is the largest class with many members) |
| caudal fin | the fin that is fartherst away from the fish's head |
| dorsal fin | the fin that runs directly above a fish's backbone |
| anal fin | the fin that is between a fish's tail (caudal) fin and its pelvic fin |
| pectoral fin | fish fin that is next to the gill cover |
| pelvic fin | ventral fin that is near the head |
| gill cover | hard door-like flap which opens when water is passing over the gills and out |
| cold blooded | term meaning that animals such as fish, amphibians, and reptiles take on the body temperature of their surroundings |
