| A | B |
|---|
| Cartilaginous fish | Class of fish that includes sharsk and rays |
| bony fish | class of fish possessing a swim bladder |
| jawless fish | scaleless fish including lampreys and hagfish |
| ectothern (cold blooded) | animal whose body temperature is the sme as their environment |
| cartilage | kind of strong, flexible tissue |
| gill | organ that absorbs oxygen from the water |
| swim bladder | organ that allows a fish to stay in the water |
| Vertebrate | animal with a backbone |
| Lamprey | is classified as jawless fish |
| bony fish | most fish are this type of fish |
