Class Osteichthyes

Question 1

What class are bony fish?

Answer 1

Class osteichthyes

Question 2

What scales are found on nonteleost bony fishes?

Answer 2

Ganoid scales

Question 3

What two scales can be found on teleolst fish?

Answer 3

Cycloid scales or ctenoid scales

Question 4

Bony fish have four things

Answer 4

Bony skeleton
Dermal scales
Mucous glands
Terminal mouth(anterior)

Question 5

Bony fish have operculum?

Answer 5

Gill covering

Question 6

Bony fish have a swim bladder

Answer 6

Fills with gas, buoyancy

Question 7

Subclass actinoptergii

Answer 7

Ray finned fishes- rays fan out in fins

Question 8

What two groups are in subclass actinoptergii?

Answer 8

Chondrosteans
Neopterygians

Question 9

Chondrosteans

Answer 9

Cartilage/bone
Ancient fish
Have some features of both cartilage and bony fish

Question 10

What kind of tails do Chondrosteans have?

Answer 10

Heterocerco or diphyceral tail

Question 11

What are examples of Chondrosteans

Answer 11

Sturgeon, bichir, paddlefish

Question 12

Neopterygians

Answer 12

New fins

Question 13

What are the two types of Neopterygians?

Answer 13

Nonteleost
Teleost

Question 14

Nonteleost

Answer 14

Primitive
Diphcercal tail
Ganoid scales, heavy, armor-like

Question 15

What is an example of a nonteleost?

Answer 15

Bowfin
Gar

Question 16

Teleosts

Answer 16

Modern bony fishes most fish are teleosts
Cycloid or ctenoid scales
Homocercal tail
These fish are diverse and adapted

Question 17

Cycloid or ctenoid scales

Answer 17

Thin and flexible overlap

Question 18

Homocercal tail

Answer 18

Upper and lower lobes of caudal fin are symmetrical

Question 19

What are examples of teleosts?

Answer 19

Sea horse, clownfish

Question 20

Subclass sarcopterygii

Answer 20

Fleshly finned fishes
Diphcercal tail
Fleshy paired lobed fins (used as legs)
Ancestors had lungs and gills
Powerful jaws

Question 21

What are the two main groups in subclass sarcopterygii?

Answer 21

Lung fishes
Lobed finned fishes

Question 22

Lung fishes

Answer 22

Have one lung cannot live out of water
Survives in water w/low oxygen comes to surface and gulps air

Question 23

Example of lungfish

Answer 23

Australian lungfish

Question 24

African and South American lungfishes

Answer 24

Secrete a slime
Makes a cocoon
Remains dormant during the dry season

Question 25

Lobed finned fishes

Answer 25

Thought to be extinct then rediscovered in 1938

Question 26

Example of the lobed finned fishes

Answer 26

The coelacanth

Question 27

Catadromy

Answer 27

Fish lives in freshwater and spawns in salt water

Question 28

Give example of catadromy

Answer 28

Freshwater eel
American and European freshwater eels spawn in in sargasso sea

Question 29

Anadromy

Answer 29

Fish live in salt water and spawn in freshwater

Question 30

Examples of anadromy

Answer 30

Pacific salmon
Atlantic salmon

Question 31

Pacific salmon

Answer 31

Die immediately after spawning in home stream

Question 32

Atlantic salmon

Answer 32

Will return to home stream to spawn year after year

Question 33

Pelagic

Answer 33

Open ocean dwelling

Question 34

Benthic

Answer 34

Bottom dwellers, close to shore

Question 35

Pelagic eggs

Answer 35

Transparent
Very small
Buoyant

Question 36

Pelagic example

Answer 36

Cod
Sunfish

Question 37

Benthic eggs

Answer 37

Non-buoyant
Adhesive
Camouflage

Question 38

Benthic examples

Answer 38

Gobi
Clownfish

Question 39

What controls the yellow perch roll

Answer 39

Dorsal fin and anal fin

Question 40

What controls perch pitch

Answer 40

Pectoral fins and pelvic fins

Question 41

What controls perch yaw

Answer 41

Pectoral fins