Section 19.1- The Bony Fish

Question 1

cold-blooded, water-dwelling vertebrates with gills and scales

Answer 1

fish

Question 2

the world’s largest fish

Answer 2

whale shark

Question 3

scientists who study fish

Answer 3

ichthyologists

Question 4

fish whose skeletons are made either partially or wholly of bone

comprise over 95% of all known fish species

Answer 4

bony fish

Question 5

among the most nourishing of all foods

Answer 5

fish

Question 6

ichthyologists speak of all fish as having ____________ main body regions

Answer 6

three

Question 7

the body region of the fish that extends from the mouth to the back of the gill covers

Answer 7

head

Question 8

the portion extending from the back of the gill covers to the urogenital opening

Answer 8

trunk

Question 9

portion extending from the rear of the trunk to the base of the tail fin

Answer 9

tail

Question 10

usually located at the very front of the fish’s body

Answer 10

mouth

Question 11

the structure of a bony fish’s teeth is dependent on the fish’s

Answer 11

diet

Question 12

ordinarily, gills are not visible because they are concealed beneath large, flat gill covers located at the back of the head on each side known as

Answer 12

opercula

Question 13

the largest part of a fish’s body

Answer 13

trunk

Question 14

the most prominent features of the trunk and tail are the fish’s

Answer 14

fins

Question 15

most bony fish have two sets of paired fins:

Answer 15

pectoral fins
pelvic fins

Question 16

fins located just behind the head on each side of the body

Answer 16

pectoral

Question 17

fins located to the rear and lower on the trunk

Answer 17

pelvic fins

Question 18

unpaired vertical fins that project from the centerline of the body

Answer 18

median fins

Question 19

the type of median fin which projects upward from the fish’s back

Answer 19

dorsal fin

Question 20

the type of median fin that projects downward from the rear of the fish’s trunk

Answer 20

anal fin

Question 21

a median fin that projects from the fish’s tail and serves as the fish’s propeller and rudder

Answer 21

caudal fin

Question 22

produce a slimy substance that makes the fish slippery and gives them their odor

Answer 22

mucous cells

Question 23

contained in a fish’s skin

special pigment cell that give them their richly varied color

Answer 23

chromatophores

Question 24

most bony fish have a protective covering of small, bony plates called

Answer 24

scales

Question 25

fish that lack scales

Answer 25

eel
catfish

Question 26

can be counted to estimate a fish’s age

Answer 26

fish’s growth rings

Question 27

provides the central framework ad chief means of support for the trunk and tail

Answer 27

backbone

Question 28

encloses and protects the brain and provides support for the mouth and gills

Answer 28

cranium

Question 29

the pectoral fins of most bony fish are attached to the back of the skull by a

Answer 29

pectoral girdle

Question 30

part of fish mostly composed of skeletal muscle

Answer 30

flesh

Question 31

W-shaped bands in which a fish’s skeletal muscles are arranged into

controlled by a separate nerve, allowing the fish to move its body in a wavelike, undulating motion

Answer 31

myomeres