Which of these species listed below is NOT a bony fish?

Which is the correct path that food takes in fish digestion?

The fish stomach is usually ____-shaped.

What is the purpose of a spiral valve in the intestines of cartilaginous fish?

Fish hearts have _____ chambers

Which path below is the correct path of deoxygenated blood in a fish circulatory system?

The first pair of gill slits in cartilaginous fish are called _______.

What is the function of spiracles?

In bony fish, the gills are covered by an _____________.

What is the function of lamellae in gills?

Fish swallow sea water to osmoregulate. What does osmoregulation prevent?

Which of these is NOT a way that fish use their sense of smell?

The nictitating membrane over shark eyes is used for _______.

This structure is used to detect vibrations in the water which benefits predatory fish

Cartilaginous fish have an extra sense organ called the __________ that can detect weak electrical fields

Which of these is not a behavior used by fish to defend their territory?

This behavior helps fish protect against predators and increase swimming efficiency

Fish, like salmon, that spend most of their life at sea and migrate to fresh water to breed are called _________________

Fish, like fresh water eels, that spend most of their life in fresh water then migrate to the sea to breed are called _________________.