| A | B |
|---|
| agnatha | class of fish, that do not have jaws |
| aquatic | growing or living in water |
| chrondrichthyes | class of fish that have cartilage skeletons |
| denticle | a small, tooth-like projection on a shark's skin |
| dorsal | referring to the top of back of an animal |
| olfactory | referring to the sense of smell |
| osteichthyes | the class of fish that have bony skeletons |
| oviparous | producing eggs that hatch after leaving the body |
| ovoviviparous | producing eggs that develop and hatch inside the female's body |
| pectoral fin | one of a pair of fins located near the gills |
| spawn | to discharge or deposit eggs directly into the water |
| ventral | referring to the belly of an animal |
| visceral | referring to the internal organs |
