Ocean Fishes Practice Quiz set 2 2025

Gas-filled organ that keeps a fish from sinking.

• fins

• gills

• swim bladder

Which fish class would a lamprey be classified in?

• Chondrichthyes

• Agnatha

• Osteichthyes

• Amphibia

What is the arrow pointing to?

• operculum

• swim bladder

• lateral line

• caudal fin

• Early Onset Male Pattern Baldness

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

What structure is represented by letter E?

• bile duct

• spiral valve

• spleen

• rectum

In fish, what is the name of the fluid-filled canal that detects movement and vibrations in water?

• Lateral Line

• Vertical Line

• Horizontal Line

• Lateral Spine

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

Identify Fish A

• Trumpetfish

• Queen Parrotfish

• Spotted Unicornfish

• Clown Triggerfish

• Turtle

What structure is represented by letter C?

• rostrum

• spiracle

• lateral line

• gill slits