NEW
Font size
WorksheetsOcean Fishes Practice Quiz 2025
Total questions: 20
Worksheet time: 10mins
What is the name of the internal structure that controls a bony fish's depth in the water?
Liver
Air Pocket
Lung Bladder
Swim Bladder
What does the fish class name "Agnatha" mean?
Jawless
Cartilage fish
Bony Fish
Toothy
Egg case of a shark or skate
parthenogenesis
mermaid's purse
ovoviviparous
viviparous
Any of the bony, overlapping plates that protrude from a fish's skin.
roe
scale
gills
Cartilage is different from bone because
It's more flexible
It's lighter
Both answers are correct
Which fish class would a lamprey be classified in?
Chondrichthyes
Agnatha
Osteichthyes
Amphibia
Identify Fish B
Trumpetfish
Queen Parrotfish
Spotted Unicornfish
Clown Triggerfish
Woodpecker
This structure is used to detect vibrations in the water.
olfactory sacs
nictitating membrane
lateral line
spiracles
What structure is represented by letter I?
bile duct
spiral valve
spleen
rectum
What is happening here?
these fish are dying
these fish are feeding on plankton
these fish are spawning eggs and sperm
these fish are releasing salt to survive
fish flatulence
What structure is represented by letter M?
pectoral fin
pelvic fin
clasper
caudal fin
#3 is the ______ fin
dorsal
lateral
anterior
bottom
What structure is represented by letter K?
pectoral fin
pelvic fin
clasper
caudal fin
Are fish vertebrates or invertebrates?
Vertebrates
Invertebrates
This is the organ where gas exchange occurs in fish.
Gills
Lungs
Heart
Operculum
Which is more of a shoal than a school?
Group A
Group B
Both of these would be considered schools of fish
What structure is represented by letter J?
rostrum
spiracle
lateral line
gill slits
What structure is represented by letter I?
pectoral fin
pelvic fin
clasper
caudal fin
